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Post Info TOPIC: Ceres

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Posts: 130560
Date:
 RE: Ceres Permalink Title: The remarkable surface homogeneity of the Dawn mission target (1) CeresAuthors: Benoit Carry, Pierre Vernazza, Christophe Dumas, William J. Merline, Olivier Mousis, Philippe Rousselot, Emmanuel Jehin, Jean Manfroid, Marcello Fulchignoni, Jean-Marc Zucconi Dwarf-planet (1) Ceres is one of the two targets, along with (4) Vesta, that will be studied by the NASA Dawn spacecraft via imaging, visible and near-infrared spectroscopy, and gamma-ray and neutron spectroscopy. While Ceres' visible and near-infrared disk-integrated spectra have been well characterized, little has been done about quantifying spectral variations over the surface. Any spectral variation would give us insights on the geographical variation of the composition and/or the surface age. The only work so far was that of Rivkin & Volquardsen (2010, Icarus 206, 327) who reported rotationally-resolved spectroscopic (disk-integrated) observations in the 2.2-4.0 {\mu}m range; their observations showed evidence for a relatively uniform surface. Here, we report disk-resolved observations of Ceres with SINFONI (ESO VLT) in the 1.17-1.32 {\mu}m and 1.45-2.35 {\mu}m wavelength ranges. The observations were made under excellent seeing conditions (0.6"), allowing us to reach a spatial resolution of ~75 km on Ceres' surface. We do not find any spectral variation above a 3% level, suggesting a homogeneous surface at our spatial resolution. Slight variations (about 2%) of the spectral slope are detected, geographically correlated with the albedo markings reported from the analysis of the HST and Keck disk-resolved images of Ceres (Li et al., 2006, Icarus 182, 143; Carry et al., 2008, A&A 478, 235). Given the lack of constraints on the surface composition of Ceres, however, we cannot assert the causes of these variations. Read more (591kb, PDF) __________________

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Posts: 130560
Date:
 Permalink Title: Determination of Ceres mass based on the most gravitationally efficient close encountersAuthors: Andjelka B KovacevicHere is presented recalculated value of the mass of Ceres, based on explicit tracking of its gravitational influence on orbits evolution of 21 selected asteroids during their mutual close encounters (CE). It was applied a new modified method (MM) for mass determination, based on the connecting of pre-encounter observations to the orbit determined from post-encounter ones. The calculated weighted mean value of Ceres mass, based on modified method, is (4.54 ±0.07)\,10^{-10} solar masses while standard procedure (SM) provided result of (4.70 ±0.04)\,10^{-10} solar masses. We found that correlation between individual estimated masses based on modified and standard method is 0.78, which confirms reliability of using modified method.Read more  (737kb, PDF) __________________

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Posts: 130560
Date:
 Permalink Tonight asteroid 1 Ceres is at opposition, which is a very good time to observe an asteroid or planet. It is located in Cetus, near the boundary with Aquarius. You'll need at least binoculars and a good finder chart to see it, since its magnitude of 7.2 puts it well beyond what can be seen with the unaided eye. Ceres was the first asteroid ever discovered. It was found even though no one was looking for it.Read more Google Earth file: Dwarf planet (1) Ceres.kmz (8kb, kmz) __________________

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Posts: 130560
Date:
 Permalink Asteroid (1) Ceres makes its closest approach to the Earth (1.989 AU) on the 17th September, 2011.Asteroid (1) Ceres is at Opposition (7.6 Magnitude) on the 17th September, 2011. __________________

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Posts: 130560
Date:
 Permalink Title: Constraining Ceres' interior from its Rotational MotionAuthors: Nicolas Rambaux (IMCCE), Julie Castillo-Rogez (JPL), Véronique Dehant (ROB), Petr Kuchynka (IMCCE, JPL)Context. Ceres is the most massive body of the asteroid belt and contains about 25 wt.% (weight percent) of water. Understanding its thermal evolution and assessing its current state are major goals of the Dawn Mission. Constraints on internal structure can be inferred from various observations. Especially, detailed knowledge of the rotational motion can help constrain the mass distribution inside the body, which in turn can lead to information on its geophysical history. Aims. We investigate the signature of the interior on the rotational motion of Ceres and discuss possible future measurements performed by the spacecraft Dawn that will help to constrain Ceres' internal structure. Methods. We compute the polar motion, precession-nutation, and length-of-day variations. We estimate the amplitudes of the rigid and non-rigid response for these various motions for models of Ceres interior constrained by recent shape data and surface properties. Results. As a general result, the amplitudes of oscillations in the rotation appear to be small, and their determination from spaceborne techniques will be challenging. For example, the amplitudes of the semi-annual and annual nutations are around ~364 and ~140 milli-arcseconds, and they show little variation within the parametric space of interior models envisioned for Ceres. This, combined with the very long-period of the precession motion, requires very precise measurements. We also estimate the timescale for Ceres' orientation to relax to a generalised Cassini State, and we find that the tidal dissipation within that object was probably too small to drive any significant damping of its obliquity since formation. However, combining the shape and gravity observations by Dawn offers the prospect to identify departures of non-hydrostaticity at the global and regional scale, which will be instrumental in constraining Ceres' past and current thermal state. We also discuss the existence of a possible Chandler mode in the rotational motion of Ceres, whose potential excitation by endogenic and/or exogenic processes may help detect the presence of liquid reservoirs within the asteroid. Read more (505kb, PDF) __________________

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Posts: 130560
Date:
 Permalink Title: Constraining Ceres' interior from its Rotational MotionAuthors: Nicolas Rambaux (IMCCE), Julie Castillo-Rogez (JPL), Véronique Dehant (ROB), Petr Kuchynka (IMCCE, JPL)Context. Ceres is the most massive body of the asteroid belt and contains about 25 wt.% (weight percent) of water. Understanding its thermal evolution and assessing its current state are major goals of the Dawn Mission. Constraints on internal structure can be inferred from various observations. Especially, detailed knowledge of the rotational motion can help constrain the mass distribution inside the body, which in turn can lead to information on its geophysical history. Aims. We investigate the signature of the interior on the rotational motion of Ceres and discuss possible future measurements performed by the spacecraft Dawn that will help to constrain Ceres' internal structure. Methods. We compute the polar motion, precession-nutation, and length-of-day variations. We estimate the amplitudes of the rigid and non-rigid response for these various motions for models of Ceres interior constrained by recent shape data and surface properties. Results. As a general result, the amplitudes of oscillations in the rotation appear to be small, and their determination from spaceborne techniques will be challenging. For example, the amplitudes of the semi-annual and annual nutations are around ~364 and ~140 milli-arcseconds, and they show little variation within the parametric space of interior models envisioned for Ceres. This, combined with the very long-period of the precession motion, requires very precise measurements. We also estimate the timescale for Ceres' orientation to relax to a generalised Cassini State, and we find that the tidal dissipation within that object was probably too small to drive any significant damping of its obliquity since formation. However, combining the shape and gravity observations by Dawn offers the prospect to identify departures of non-hydrostaticity at the global and regional scale, which will be instrumental in constraining Ceres' past and current thermal state. We also discuss the existence of a possible Chandler mode in the rotational motion of Ceres, whose potential excitation by endogenic and/or exogenic processes may help detect the presence of liquid reservoirs within the asteroid. Read more (505kb, PDF) __________________

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Posts: 130560
Date:

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Posts: 130560
Date:
 Permalink Title: A Search for Satellite around CeresAuthors: A. Bieryla, J. Wm. Parker, E.F. Young, L. A. McFadden, C. T. Russell, S. A. Stern, M. V. Sykes, B. GladmanWe conducted a satellite search around the dwarf planet 1 Ceres using Hubble Space Telescope and ground-based Palomar data. No candidate objects were found orbiting Ceres in its entire stability region down to ~500km from the surface of Ceres. Assuming a satellite would have the same albedo as Ceres, which has a visual geometric albedo of 0.07-0.10, our detection limit is sensitive to satellites larger than 1-2 km in diameter. Read more  (150kb, PDF) __________________

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Posts: 130560
Date:
 Permalink Asteroid (1) Ceres is in conjunction with the Sun at 1:00UT, 31st January, 2011 __________________

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Posts: 130560
Date:
 Permalink EphemerisDate TT R. A. (2000) Decl. Delta r Elong. Phase V2011 06 19 00 05 43.6 -11 21 37 2.7961 2.9833 90.5 19.9 9.02011 06 20 00 06 30.3 -11 20 37 2.7827 2.9832 91.3 19.9 9.02011 06 21 00 07 16.2 -11 19 44 2.7693 2.9832 92.0 19.9 9.02011 06 22 00 08 01.2 -11 18 58 2.7559 2.9831 92.8 19.9 8.92011 06 23 00 08 45.4 -11 18 19 2.7425 2.9831 93.5 19.9 8.92011 06 24 00 09 28.7 -11 17 48 2.7292 2.9830 94.3 19.9 8.92011 06 25 00 10 11.2 -11 17 25 2.7158 2.9829 95.1 19.8 8.92011 06 26 00 10 52.8 -11 17 09 2.7024 2.9828 95.9 19.8 8.92011 06 27 00 11 33.4 -11 17 01 2.6891 2.9828 96.6 19.8 8.92011 06 28 00 12 13.1 -11 17 00 2.6758 2.9827 97.4 19.8 8.92011 06 29 00 12 51.9 -11 17 07 2.6626 2.9826 98.2 19.7 8.92011 06 30 00 13 29.8 -11 17 22 2.6493 2.9825 99.0 19.7 8.92011 07 01 00 14 06.6 -11 17 45 2.6361 2.9825 99.8 19.6 8.82011 07 02 00 14 42.5 -11 18 16 2.6229 2.9824 100.6 19.6 8.82011 07 03 00 15 17.4 -11 18 55 2.6098 2.9823 101.4 19.5 8.82011 07 04 00 15 51.3 -11 19 41 2.5967 2.9822 102.2 19.5 8.82011 07 05 00 16 24.2 -11 20 36 2.5836 2.9821 103.0 19.4 8.82011 07 06 00 16 56.0 -11 21 39 2.5706 2.9820 103.8 19.3 8.82011 07 07 00 17 26.8 -11 22 50 2.5577 2.9819 104.7 19.3 8.82011 07 08 00 17 56.6 -11 24 09 2.5448 2.9818 105.5 19.2 8.82011 07 09 00 18 25.3 -11 25 36 2.5319 2.9817 106.3 19.1 8.72011 07 10 00 18 52.9 -11 27 12 2.5192 2.9816 107.1 19.0 8.72011 07 11 00 19 19.4 -11 28 55 2.5064 2.9815 108.0 18.9 8.72011 07 12 00 19 44.8 -11 30 47 2.4938 2.9813 108.8 18.8 8.72011 07 13 00 20 09.1 -11 32 47 2.4812 2.9812 109.7 18.7 8.72011 07 14 00 20 32.2 -11 34 55 2.4687 2.9811 110.5 18.6 8.72011 07 15 00 20 54.3 -11 37 11 2.4563 2.9810 111.4 18.5 8.72011 07 16 00 21 15.1 -11 39 36 2.4439 2.9809 112.2 18.4 8.62011 07 17 00 21 34.8 -11 42 09 2.4317 2.9807 113.1 18.3 8.62001 07 18 00 21 53.4 -11 44 50 2.4195 2.9806 114.0 18.2 8.62011 07 19 00 22 10.7 -11 47 39 2.4074 2.9805 114.8 18.0 8.62011 07 20 00 22 26.8 -11 50 37 2.3954 2.9803 115.7 17.9 8.62011 07 21 00 22 41.7 -11 53 43 2.3835 2.9802 116.6 17.8 8.62011 07 22 00 22 55.3 -11 56 57 2.3717 2.9801 117.5 17.6 8.52011 07 23 00 23 07.7 -12 00 19 2.3600 2.9799 118.4 17.5 8.52011 07 24 00 23 18.9 -12 03 49 2.3484 2.9798 119.3 17.3 8.52011 07 25 00 23 28.7 -12 07 28 2.3369 2.9796 120.2 17.1 8.52011 07 26 00 23 37.3 -12 11 14 2.3255 2.9795 121.1 17.0 8.52011 07 27 00 23 44.6 -12 15 08 2.3143 2.9793 122.0 16.8 8.52011 07 28 00 23 50.5 -12 19 11 2.3032 2.9792 122.9 16.6 8.42011 07 29 00 23 55.2 -12 23 21 2.2922 2.9790 123.8 16.5 8.42011 07 30 00 23 58.5 -12 27 38 2.2813 2.9789 124.7 16.3 8.42011 07 31 00 24 00.5 -12 32 04 2.2706 2.9787 125.6 16.1 8.42011 08 01 00 24 01.1 -12 36 36 2.2600 2.9785 126.6 15.9 8.42011 08 02 00 24 00.4 -12 41 16 2.2495 2.9784 127.5 15.7 8.42011 08 03 00 23 58.3 -12 46 03 2.2393 2.9782 128.4 15.5 8.32011 08 04 00 23 54.8 -12 50 57 2.2291 2.9780 129.4 15.3 8.32011 08 05 00 23 50.0 -12 55 58 2.2191 2.9778 130.3 15.1 8.32011 08 06 00 23 43.9 -13 01 05 2.2093 2.9777 131.3 14.8 8.32011 08 07 00 23 36.4 -13 06 19 2.1996 2.9775 132.2 14.6 8.32011 08 08 00 23 27.5 -13 11 39 2.1901 2.9773 133.2 14.4 8.32011 08 09 00 23 17.2 -13 17 05 2.1808 2.9771 134.1 14.1 8.22011 08 10 00 23 05.6 -13 22 37 2.1717 2.9769 135.1 13.9 8.22011 08 11 00 22 52.7 -13 28 14 2.1627 2.9767 136.0 13.7 8.22011 08 12 00 22 38.4 -13 33 57 2.1539 2.9765 137.0 13.4 8.22011 08 13 00 22 22.7 -13 39 45 2.1453 2.9764 138.0 13.2 8.22011 08 14 00 22 05.7 -13 45 38 2.1369 2.9762 138.9 12.9 8.12011 08 15 00 21 47.4 -13 51 36 2.1287 2.9760 139.9 12.7 8.12011 08 16 00 21 27.7 -13 57 38 2.1207 2.9757 140.9 12.4 8.12011 08 17 00 21 06.6 -14 03 44 2.1128 2.9755 141.8 12.1 8.12011 08 18 00 20 44.3 -14 09 54 2.1052 2.9753 142.8 11.9 8.12011 08 19 00 20 20.6 -14 16 07 2.0978 2.9751 143.8 11.6 8.12011 08 20 00 19 55.7 -14 22 24 2.0906 2.9749 144.7 11.3 8.02011 08 21 00 19 29.4 -14 28 44 2.0836 2.9747 145.7 11.0 8.02011 08 22 00 19 01.9 -14 35 06 2.0769 2.9745 146.7 10.8 8.02011 08 23 00 18 33.1 -14 41 31 2.0704 2.9743 147.6 10.5 8.02011 08 24 00 18 03.1 -14 47 58 2.0640 2.9740 148.6 10.2 8.02011 08 25 00 17 31.9 -14 54 26 2.0580 2.9738 149.5 9.9 7.92011 08 26 00 16 59.4 -15 00 55 2.0521 2.9736 150.5 9.6 7.92011 08 27 00 16 25.8 -15 07 25 2.0465 2.9733 151.4 9.4 7.92011 08 28 00 15 51.0 -15 13 55 2.0411 2.9731 152.3 9.1 7.92011 08 29 00 15 15.1 -15 20 25 2.0360 2.9729 153.2 8.8 7.92011 08 30 00 14 38.1 -15 26 55 2.0312 2.9726 154.1 8.5 7.92011 08 31 00 14 00.1 -15 33 24 2.0265 2.9724 155.0 8.3 7.82011 09 01 00 13 21.0 -15 39 51 2.0222 2.9721 155.9 8.0 7.82011 09 02 00 12 41.0 -15 46 17 2.0181 2.9719 156.7 7.7 7.82011 09 03 00 12 00.0 -15 52 40 2.0142 2.9717 157.5 7.5 7.82011 09 04 00 11 18.1 -15 59 01 2.0106 2.9714 158.3 7.2 7.82011 09 05 00 10 35.3 -16 05 19 2.0073 2.9711 159.1 7.0 7.82011 09 06 00 09 51.7 -16 11 33 2.0042 2.9709 159.8 6.7 7.72011 09 07 00 09 07.3 -16 17 43 2.0014 2.9706 160.5 6.5 7.72011 09 08 00 08 22.2 -16 23 50 1.9989 2.9704 161.1 6.3 7.72011 09 09 00 07 36.4 -16 29 51 1.9966 2.9701 161.7 6.1 7.72011 09 10 00 06 49.9 -16 35 47 1.9946 2.9698 162.3 5.9 7.72011 09 11 00 06 02.8 -16 41 38 1.9929 2.9696 162.8 5.8 7.72011 09 12 00 05 15.2 -16 47 23 1.9914 2.9693 163.2 5.6 7.72011 09 13 00 04 27.0 -16 53 02 1.9903 2.9690 163.5 5.5 7.72011 09 14 00 03 38.4 -16 58 34 1.9893 2.9687 163.8 5.4 7.72011 09 15 00 02 49.3 -17 03 59 1.9887 2.9685 164.0 5.4 7.72011 09 16 00 01 59.9 -17 09 17 1.9883 2.9682 164.1 5.3 7.62011 09 17 00 01 10.1 -17 14 27 1.9883 2.9679 164.1 5.3 7.62011 09 18 00 00 20.1 -17 19 29 1.9885 2.9676 164.0 5.3 7.62011 09 19 23 59 29.9 -17 24 22 1.9889 2.9673 163.9 5.4 7.72011 09 20 23 58 39.5 -17 29 07 1.9897 2.9670 163.7 5.5 7.72011 09 21 23 57 49.0 -17 33 43 1.9907 2.9667 163.3 5.6 7.72011 09 22 23 56 58.4 -17 38 09 1.9920 2.9664 163.0 5.7 7.72011 09 23 23 56 07.9 -17 42 26 1.9935 2.9661 162.5 5.8 7.72011 09 24 23 55 17.4 -17 46 32 1.9954 2.9658 162.0 6.0 7.72011 09 25 23 54 27.0 -17 50 29 1.9975 2.9655 161.4 6.2 7.72011 09 26 23 53 36.8 -17 54 15 1.9999 2.9652 160.8 6.4 7.72011 09 27 23 52 46.7 -17 57 50 2.0026 2.9649 160.1 6.6 7.72011 09 28 23 51 57.0 -18 01 14 2.0055 2.9646 159.4 6.8 7.72011 09 29 23 51 07.6 -18 04 26 2.0087 2.9643 158.6 7.1 7.82011 09 30 23 50 18.6 -18 07 28 2.0122 2.9640 157.8 7.3 7.82011 10 01 23 49 30.1 -18 10 17 2.0159 2.9637 157.0 7.6 7.82011 10 02 23 48 42.0 -18 12 55 2.0199 2.9633 156.2 7.8 7.82011 10 03 23 47 54.6 -18 15 21 2.0242 2.9630 155.3 8.1 7.82011 10 04 23 47 07.7 -18 17 35 2.0287 2.9627 154.4 8.4 7.82011 10 05 23 46 21.4 -18 19 36 2.0334 2.9624 153.5 8.7 7.92011 10 06 23 45 35.9 -18 21 26 2.0385 2.9620 152.6 8.9 7.92011 10 07 23 44 51.0 -18 23 03 2.0437 2.9617 151.6 9.2 7.92011 10 08 23 44 07.0 -18 24 28 2.0493 2.9614 150.7 9.5 7.92011 10 09 23 43 23.8 -18 25 41 2.0550 2.9610 149.7 9.8 7.92011 10 10 23 42 41.5 -18 26 41 2.0610 2.9607 148.8 10.1 7.92011 10 11 23 42 00.0 -18 27 29 2.0673 2.9604 147.8 10.4 8.02011 10 12 23 41 19.5 -18 28 05 2.0737 2.9600 146.8 10.6 8.02011 10 13 23 40 39.9 -18 28 29 2.0804 2.9597 145.8 10.9 8.02011 10 14 23 40 01.4 -18 28 40 2.0873 2.9593 144.8 11.2 8.02011 10 15 23 39 23.9 -18 28 39 2.0945 2.9590 143.9 11.5 8.02011 10 16 23 38 47.5 -18 28 26 2.1019 2.9586 142.9 11.7 8.12011 10 17 23 38 12.1 -18 28 00 2.1095 2.9582 141.9 12.0 8.12011 10 18 23 37 37.9 -18 27 23 2.1172 2.9579 140.9 12.3 8.12011 10 19 23 37 04.8 -18 26 33 2.1253 2.9575 139.9 12.5 8.12011 10 20 23 36 32.9 -18 25 32 2.1335 2.9572 138.9 12.8 8.12011 10 21 23 36 02.3 -18 24 19 2.1419 2.9568 137.9 13.1 8.12011 10 22 23 35 32.8 -18 22 54 2.1505 2.9564 136.9 13.3 8.22011 10 23 23 35 04.6 -18 21 17 2.1593 2.9561 135.9 13.6 8.22011 10 24 23 34 37.7 -18 19 29 2.1683 2.9557 134.9 13.8 8.22011 10 25 23 34 12.0 -18 17 29 2.1775 2.9553 133.9 14.0 8.22011 10 26 23 33 47.7 -18 15 18 2.1869 2.9549 132.9 14.3 8.22011 10 27 23 33 24.7 -18 12 56 2.1964 2.9545 131.9 14.5 8.22011 10 28 23 33 03.0 -18 10 23 2.2062 2.9542 130.9 14.7 8.32011 10 29 23 32 42.7 -18 07 39 2.2161 2.9538 129.9 14.9 8.32011 10 30 23 32 23.7 -18 04 44 2.2261 2.9534 129.0 15.2 8.32011 10 31 23 32 06.2 -18 01 38 2.2364 2.9530 128.0 15.4 8.32011 11 01 23 31 50.0 -17 58 22 2.2468 2.9526 127.0 15.6 8.32011 11 02 23 31 35.2 -17 54 56 2.2573 2.9522 126.0 15.8 8.42011 11 03 23 31 21.7 -17 51 20 2.2680 2.9518 125.1 16.0 8.42011 11 04 23 31 09.7 -17 47 33 2.2788 2.9514 124.1 16.2 8.42011 11 05 23 30 59.1 -17 43 37 2.2898 2.9510 123.1 16.3 8.42011 11 06 23 30 49.8 -17 39 32 2.3009 2.9506 122.2 16.5 8.42011 11 07 23 30 42.0 -17 35 17 2.3121 2.9502 121.2 16.7 8.42011 11 08 23 30 35.5 -17 30 53 2.3234 2.9498 120.3 16.9 8.52011 11 09 23 30 30.4 -17 26 20 2.3349 2.9494 119.3 17.0 8.52011 11 10 23 30 26.7 -17 21 38 2.3465 2.9490 118.4 17.2 8.52011 11 11 23 30 24.3 -17 16 48 2.3582 2.9486 117.4 17.3 8.52011 11 12 23 30 23.3 -17 11 49 2.3701 2.9481 116.5 17.5 8.52011 11 13 23 30 23.7 -17 06 41 2.3820 2.9477 115.6 17.6 8.52011 11 14 23 30 25.4 -17 01 26 2.3940 2.9473 114.7 17.8 8.52011 11 15 23 30 28.5 -16 56 02 2.4061 2.9469 113.7 17.9 8.62011 11 16 23 30 32.9 -16 50 31 2.4184 2.9465 112.8 18.0 8.62011 11 17 23 30 38.6 -16 44 52 2.4307 2.9460 111.9 18.1 8.62011 11 18 23 30 45.7 -16 39 05 2.4431 2.9456 111.0 18.3 8.62011 11 19 23 30 54.0 -16 33 10 2.4556 2.9452 110.1 18.4 8.62011 11 20 23 31 03.7 -16 27 09 2.4682 2.9447 109.2 18.5 8.62011 11 21 23 31 14.6 -16 21 00 2.4808 2.9443 108.3 18.6 8.62011 11 22 23 31 26.9 -16 14 44 2.4936 2.9438 107.4 18.7 8.72011 11 23 23 31 40.4 -16 08 21 2.5064 2.9434 106.5 18.8 8.72011 11 24 23 31 55.2 -16 01 52 2.5192 2.9430 105.6 18.9 8.72011 11 25 23 32 11.2 -15 55 16 2.5321 2.9425 104.7 18.9 8.72011 11 26 23 32 28.5 -15 48 33 2.5451 2.9421 103.9 19.0 8.72011 11 27 23 32 47.0 -15 41 44 2.5582 2.9416 103.0 19.1 8.72011 11 28 23 33 06.7 -15 34 49 2.5713 2.9412 102.1 19.1 8.72011 11 29 23 33 27.6 -15 27 47 2.5844 2.9407 101.3 19.2 8.82011 11 30 23 33 49.7 -15 20 40 2.5976 2.9402 100.4 19.3 8.82011 12 01 23 34 13.0 -15 13 27 2.6108 2.9398 99.5 19.3 8.82011 12 02 23 34 37.4 -15 06 08 2.6241 2.9393 98.7 19.4 8.82011 12 03 23 35 03.0 -14 58 44 2.6373 2.9389 97.8 19.4 8.82011 12 04 23 35 29.7 -14 51 15 2.6507 2.9384 97.0 19.4 8.82011 12 05 23 35 57.5 -14 43 40 2.6640 2.9379 96.2 19.5 8.82011 12 06 23 36 26.3 -14 36 00 2.6774 2.9375 95.3 19.5 8.82011 12 07 23 36 56.3 -14 28 15 2.6908 2.9370 94.5 19.5 8.92011 12 08 23 37 27.3 -14 20 26 2.7042 2.9365 93.7 19.6 8.92011 12 09 23 37 59.4 -14 12 31 2.7176 2.9360 92.8 19.6 8.92011 12 10 23 38 32.5 -14 04 32 2.7310 2.9355 92.0 19.6 8.92011 12 11 23 39 06.6 -13 56 28 2.7444 2.9351 91.2 19.6 8.92011 12 12 23 39 41.7 -13 48 20 2.7579 2.9346 90.4 19.6 8.9 __________________
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