The 9 - 20 metre wide asteroid 2014 RJ11 will make a close pass (3.0 lunar distances, 0.0076 AU), travelling at 7.43 km/second, to the Earth-Moon system on the 8th September 2014 @ 21:54 UT ±00:01. See moreThe Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.0025...
The Great Comet of 1882 formally designated C/1882 R1, 1882 II, and 1882b, was a comet which became very bright in September 1882. It was a member of the Kreutz Sungrazers, a family of comets which pass within 1 R of the Sun's photosphere at perihelion. The comet was bright enough to be visible next to th...
Title: Pulsation period variations in the RRc Lyrae star KIC 5520878 Author: Michael Hippke, John G. Learned, A. Zee, William H. Edmondson, Ian R. Steven, John F. Lindner, Benham Kia, William L. Ditto Learned et. al. proposed that a sufficiently advanced extra-terrestrial civilization may tick...
Title: An Orbital Stability Study of the Proposed Companions of SW Lyncis Author: Tobias C. Hinse, Jonathan Horner, Robert A. Wittenmyer We have investigated the dynamical stability of the proposed companions orbiting the Algol type short-period eclipsing binary SW Lyncis (Kim et al. 2010). Th...
NGC 49 (also CGCG 549-029, MCG+08-01-033, UGC 136 and PGC 952) is a magnitude +14.1 lenticular galaxy located 225 ±16 million light-years away in the constellation Andromeda. The galaxy was discovered by American astronomer Lewis A. Swift using a 40.6 cm (16 inch) Alvan Clark and Sons refractor at...
NGC 804 (also IC 1773, MCG 5-5-49, UGC 1557 and PGC 7873) is a magnitude +13.7 elliptical galaxy located 242 million light-years away in the constellation Triangulum. The galaxy was discovered by American astronomer Lewis A. Swift using a 40.6 cm (16 inch) Alvan Clark and Sons refractor at the Warne...
NGC 2550 (also IRAS 08188+7410, MCG 12-8-37, UGC 4359 and PGC 23604) is a magnitude +12.8 spiral galaxy located 104 million light-years away in the constellation Camelopardalis. The galaxy was discovered by American astronomer Lewis A. Swift using a 40.6 cm (16 inch) Alvan Clark and Sons refracto...
Title: Proper Motions of the Ansae in the Planetary Nebula NGC 7009
Authors: Luis F. Rodriguez, Yolanda Gomez
For the planetary nebula NGC 7009, we present a comparison of two unpublished Very Large Array archive data sets taken with a time separation of 8.09 years to confirm...
Messier 15 (also M15, NGC 7078, Struve 9 and GCL 120) is a magnitude +6.2 globular star cluster located 33,600 light-years away in the constellation Pegasus. The cluster is filled with old orange and yellow giants stars. Pease 1 is a planetary nebula located within the globular cluster. The cluste...
Messier 52 (also M52, NGC 7654 and OCL 260) is a magnitude +5.0 open star cluster located 5,000 ±2000 light-years away in the constellation Cassiopeia. The cluster was discovered by French astronomer Charles Messier using a 8.38 cm (3.3-inch) refracting telescope at the Hôtel de Cluny (now the Mus...
Photomosaic captured with a 100mm f5 Helios refractor and Vesta pro webcam Aristarchus crater captured with a 100mm f5 Helios refractor and Vesta pro webcam for 'International Observe the Moon Night'
Orbital elements:
P/2012 G1 (PANSTARRS)
T 2012 June 1.43253 TT MPC
q 2.5841656 (2000.0) P Q
n 0.11562497 Peri. 286.11485 -0.85803133 +0.47397143
a 4.1728711 Node 282.54401 -0.35860043 -0.82860500
e 0.3807224 Incl. 11.69249 -0.36767917 -0.29793428
P 8.52
From 16 observations 2012 Ap...
Title: Quasi-Hilda Comet 147P/Kushida-Muramatsu: Another long temporary satellite capture by Jupiter Authors: Katsuhito Ohtsuka, Takashi Ito, Makoto Yoshikawa, David J. Asher, Hideyoshi Arakida The quasi-Hilda comets (QHCs), being in unstable 3:2 Jovian mean motion resonance, are consi...
