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Planetesimals
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Title: Evidence for universality in the initial planetesimal mass function Author: Jacob B. Simon, Philip J. Armitage, Andrew N. Youdin, Rixin Li Planetesimals may form from the gravitational collapse of dense particle clumps initiated by the streaming instability. We use simulations of aero...
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Asteroid (80) Sappho
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Asteroid (80) Sappho is at Opposition on the 9th May, 2010. Distance to Sun=2.527 AU Distance to Earth=1.518 AU Magnitude=11.0 mag Ephemeris Date UT R.A. (J2000) Decl. Delta r El. Ph. V h m s 2010 05 09 000000 15 06 24.1 -14 59 37 1.518 2.527 177.6 1.0 11.1 2010 05 10 000000 15 05 24.4 -14 51 54 1.516 2.525 1...
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IO
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Title: Loki, Io: New groundbased observations and a model describing the change from periodic overturn
Authors: Julie A. Rathbun, John R. Spencer
Loki Patera is the most powerful volcano in the solar system.
Researchers have obtained measurements of Loki's 3.5...
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Titan
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1 2 3 4 5 … 49
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The Cassini mission has made the most detailed ever study ever Saturn’s largest moon, Titan, and its atmosphere. The results could lead to a better understanding of the conditions that existed on the young Earth.
Titan...
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Asteroid (30) Urania
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Asteroid (30) Urania is at opposition on the 4th June, 2010 (V = 10.8) Ephemeris Date TT R. A. (2000) Decl. Delta r Elong. Phase V 2010 06 05 16 50.41 -25 16.6 1.566 2.580 177.2 1.1 10.8 2010 06 10 16 44.99 -25 04.9 1.564 2.576 173.6 2.5 10.9 2010 06 15 16 39.72 -24 52.0 1.569 2.571 167.9 4.8 11.0 2010 06 20 16 34....
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Asteroid 29 Amphitrite
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29 Amphitrite is one of the largest S-type asteroids, probably third in diameter after Eunomia and Juno, although Iris and Herculina are similar in size. It is probably not a fully solid body, since its density is too low for a solid silicate object and much lower than Eunomia or Juno. Its orbit is less...
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Saturn's rings
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1 2 3 4 5 … 17
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Specially designed Cassini orbits place Earth and Cassini on opposite sides of Saturn's rings, a geometry known as occultation. Cassini conducted the first radio occultation observation of Saturn's rings on May 3, 2005.
Three simultaneous radio signals of 0.94, 3.6, and 13 centimetre wavele...
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Mars Trojan
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A newly discovered Mars Trojan, 2007 NS2.[spoiler] Designation (and name) Prov. Des. Ln q Q H Epoch M Peri. Node Incl. e a Opps. Ref. (5261) Eureka 1990 MB L5 1.425 1.622 16.1 20070410 268.20 95.4 245.1 20.3 0.065 1.524 10 MPO120682 (101429) 1998 VF31 L5 1.371 1.677 17.2 20070410 65.29 310.5 221.4 31...
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Heliosphere
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A Big Surprise from the Edge of the Solar System NASA's Voyager probes are truly going where no one has gone before. Gliding silently toward the stars, 9 billion miles from Earth, they are beaming back news from the most distant, unexplored reaches of the solar system. Mission scientists say the prob...
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46P/Wirtanen
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Comet 46P/Wirtanen is brightening as it travels through Pisces this month. The comet passes close to the spiral galaxy NGC 524 on February 4 - 5. ate TT R. A. (2000) Decl. Delta r Elong. Phase m1 2008 02 04 01 19.44 +07 54.3 0.932 1.058 66.9 59.0 9...
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Europa
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1 2 3 4 5 … 6
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When a spacecraft was launched to search for water and life on Mars on Aug. 12, some scientists also cast their eyes on the more remote Europa, one of Jupiter's moons, with the hope that the ice-covered sa...
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Asteroid (101955) 1999 RQ36
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Title: Long term impact risk for (101955) 1999 RQ36 Authors: Andrea Milani, Steven R. Chesley, Maria Eugenia Sansaturio, Fabrizio Bernardi, Giovanni B. Valsecchi, Oscar Arratia The potentially hazardous asteroid (101955) 1999 RQ36 has the possibility of collision with the Earth in the latter...
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Asteroid (230) Athamantis
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Asteroid (230) Athamantis is at opposition on the 26th May, 2010. Distance to Sun=2.481 AU Distance to Earth=1.468 AU Magnitude=10.2 mag Ephemeris Date TT R. A. (2000) Decl. Delta r Elong. Phase V 2010 05 21 16 17.84 -20 20.8 1.476 2.484 173.5 2.7 10.4 2010 05 26 16 12.87 -19 47.3 1.469 2.481 178.6 0.6...
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Kuiper Belt
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1 2 3 4 5 … 6
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Researchers say they have found the first evidence that the frozen outer reaches of our solar system could be littered with many more objects than we think.
Astronomers have been trying to get a picture of the region, known as the Kuiper belt, because it is believed to contain debris from the birth o...
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Asteroid (63) Ausonia
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Asteroid (63) Ausonia is at opposition on the 29th June 2010. (V = 9.7) Ephemeris Date TT R. A. (2000) Decl. Delta r Elong. Phase V 2010 06 05 18 54.17 -32 48.2 1.150 2.096 151.0 13.6 10.1 2010 06 10 18 50.63 -32 57.5 1.126 2.095 156.1 11.3 10.0 2010 06 15 18 46.33 -33 04.2 1.108 2.095 161.0 9.1 9.9 2010 06 20 18 4...
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