89 Julia
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| Discovery | |
|---|---|
| Discovered by: | Édouard Stephan |
| Discovery date: | August 6, 1866 |
| Alternative names: | |
| Minor planet category: | Main belt |
| Orbital characteristics | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion distance: | 451.576 Gm (3.019 AU) |
| Perihelion distance: | 311.336 Gm (2.081 AU) |
| Semi-major axis: | 381.456 Gm (2.550 AU) |
| Eccentricity: | 0.184 |
| Orbital period: | 1487.227 d (4.07 a) |
| Avg. orbital speed: | 18.49 km/s |
| Mean anomaly: | 129.159° |
| Inclination: | 16.142° |
| Longitude of ascending node: | 311.648° |
| Argument of perihelion: | 44.990° |
| Physical characteristics | |
| Dimensions: | 151.5 km |
| Mass: | 3.6×1018 kg |
| Mean density: | ? g/cm³ |
| Equatorial surface gravity: | 0.0423 m/s² |
| Escape velocity: | 0.0801 km/s |
| Rotation period: | ? d |
| Albedo: | 0.176 [1] |
| Temperature: | ~174 K |
| Spectral type: | S |
| Absolute magnitude: | 6.60 |
89 Julia is a large main belt asteroid. It was discovered by a French astronomer Édouard Stephan on August 6, 1866. It was first of his two asteroid discoveries; the other was 91 Aegina. It is believed to be named after Saint Julia of Corsica. A stellar occultation by Julia was observed on December 20, 1985.
[edit] Aspects
| Stationary, than retrograde | Opposition | Distance to earth | Brightness | Stationary, than prograde | Conjunction to Sun | |
|---|---|---|---|---|---|---|
| 23. March 2004 | 16. May 2004 | 1,76565 AE | 10,6 mag | 29. June 2004 | 17. January 2005 | |
| 3. September2005 | 25. October 2005 | 1,22077 AE | 9,5 mag | 25. November 2005 | 6. July 2006 | |
| 21. December 2006 | 17. February2007 | 1,95333 AE | 10,7 mag | 11. April 2007 | 29. September2007 | |
| 14. March 2008 | 8. May 2008 | 1,82663 AE | 10,7 mag | 21. June 2008 | 6. January 2009 | |
| 19. August 2009 | 10. October 2009 | 1,16983 AE | 9,3 mag | 12. November 2009 | 28. June 2010 | |
| 16. December 2010 | 11. February2011 | 1,91794 AE | 10,5 mag | 6. April 2011 | 24. September2011 | |
| 5. March 2012 | 1. May 2012 | 1,88018 AE | 10,8 mag | 15. June 2012 | 28. December 2012 | |
| 3. August 2013 | 25. September2013 | 1,13104 AE | 9,2 mag | 30. October 2013 | 18. June 2014 | |
| 12. December 2014 | 5. February2015 | 1,87771 AE | 10,4 mag | 31. March 2015 | 18. September2015 | |
| 26. February2016 | 24. April 2016 | 1,92611 AE | 10,9 mag | 9. June 2016 | 18. December 2016 | |
| 20. July 2017 | 9. September2017 | 1,11064 AE | 9,0 mag | 19. October 2017 | 8. June 2018 | |
| 7. December 2018 | 30. January 2019 | 1,83292 AE | 10,2 mag | 25. March 2019 | 12. September2019 | |
| 18. February2020 | 17. April 2020 | 1,96453 AE | 11,0 mag | 3. June 2020 | 10. December 2020 |
[edit] References
| Minor planets | ||
|---|---|---|
| Previous minor planet | 89 Julia | Next minor planet |
| List of asteroids | ||
Vulcanoids · Near-Earth asteroids · Main belt · Jupiter Trojans · Centaurs · Damocloids · Comets · Trans-Neptunians (Kuiper belt • Scattered disc • Oort cloud)
For other objects and regions, see Asteroid groups and families, Binary asteroids, Asteroid moons and the Solar System.
For a complete listing, see List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names.
