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1002 Olbersia (1923 OB)
Classification: Main-belt Asteroid          SPK-ID: 2001002
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1538899229282597 5.4386e-08  
a 2.786314867210644 1.6543e-08 AU
q 2.357529087041734 1.4694e-07 AU
i 10.76833696410569 5.847e-06 deg
node 343.7602538584831 2.681e-05 deg
peri 355.6340572552124 3.101e-05 deg
M 212.5656155923562 1.7945e-05 deg
tp 2457696.228822017723
(2016-Nov-03.72882202)
8.7809e-05 JED
period 1698.805722509566
4.65
1.513e-05
4.142e-08
d
yr
n .2119135785981395 1.8873e-09 deg/d
Q 3.215100647379554 1.9089e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1331  
   data-arc span      29204 days (79.96 yr)  
   first obs. used      1935-02-08  
   last obs. used      2015-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50061  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 12:56:31  

Additional Information
 Earth MOID = 1.34958 AU 
 T_jup = 3.288 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.8 mag n/a MPO324313  
diameter diameter 32.13 km 2.3 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3
rotation period rot_per 10.244 h n/a LCDB (Rev. 2015-Feb); Warner et al., 2009 Published Reference List:
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
geometric albedo albedo 0.0621   0.010 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3

1002 Olbersia (1923 OB)          Discovered 1923-Aug-15 by Albitzkij, V. at Simeis (094)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1923 OB = 1956 UR 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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