Astronomy:2006 HH123
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| Discovery[1][2] | |
|---|---|
| Discovered by | M. W. Buie R. L. Millis S. D. Kern |
| Discovery date | April 26, 2006 |
| Designations | |
| 2006 HH123 | |
| Minor planet category | deleted[3] Lost TNO SDO |
| Orbital characteristics[4][5] | |
| Epoch April 15, 2006 (JD 2453840.5) | |
| |{{{apsis}}}|helion}} | 82 AU (Q) |
| |{{{apsis}}}|helion}} | 30 AU (q) |
| 56 AU (a) | |
| Eccentricity | 0.46 (assumed)[4] |
| Orbital period | 416 yr |
| Mean anomaly | 360° (M) |
| Inclination | 44° |
| Longitude of ascending node | 240° |
| 0.4° | |
| Physical characteristics | |
| Absolute magnitude (H) | 5.2[4] |
2006 HH123, also written as 2006 HH123, was a misidentified nonexistent object that had a short 1 day observation arc. It was formerly thought to be a lost object with an assumed eccentricity of 0.46.[4] If it had been a scattered-disc object it would have had an absolute magnitude of 5.2,[4] and been a possible dwarf planet. The preliminary orbital elements (as displayed in the infobox to the right) were calculated using only three observations over a period of one day;[4] hence its orbit was very poorly known and it quickly became lost.
Of the three discovery images, the first one is an unidentified object, the second one was identified as the main-belt asteroid (130902) 2000 VW33, and the third image shows nothing at the measured position.[6] The three observations of 2006 HH123 were deleted on 6 November 2014,[3] and the provisional designation 2006 HH123 is no longer listed in the Minor Planet Center database.
See also
- (392741) 2012 SQ31 – misidentified as a large TNO on discovery, turned out to be a sub-kilometer main-belt asteroid
- 330 Adalberta – another misidentified nonexistent object (the name was later reused for an object that actually exists)
References
- ↑ "MPEC 2006-L50 : 2006 HF123, 2006 HG123, 2006 HH123, 2006 HJ123". IAU Minor Planet Center. 2006-06-11. http://www.minorplanetcenter.net/mpec/K06/K06L50.html. Retrieved 2014-12-21. (K06HC3H)
- ↑ "List Of Centaurs and Scattered-Disk Objects". Minor Planet Center. Archived from the original on 25 July 2011. https://web.archive.org/web/20110725075304/http://www.minorplanetcenter.org/iau/lists/Centaurs.html. Retrieved 2011-08-19.
- ↑ 3.0 3.1 M.P.C. 90383
- ↑ 4.0 4.1 4.2 4.3 4.4 4.5 "Elements and Ephemeris for 2006 HH123". http://scully.cfa.harvard.edu/cgi-bin/returnprepeph.cgi?d=d&o=K06HC3H.
- ↑ "JPL Small-Body Database Browser: (2006 HH123)". Archived from the original on 2012-12-12. https://archive.today/20121212092427/http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2006HH123. Retrieved 2011-08-19.
- ↑ "2006 HH123 ‘lost centaur’ este inexistent". Archived from the original on 2014-10-17. https://web.archive.org/web/20141017163004/http://ngc6543.wordpress.com/2014/09/10/2006-hh123-lost-centaur-este-inexistent/. Retrieved 2015-01-19.
External links
- (Deleted) 2006 HH123 at the JPL Small-Body Database
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