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21100 (1992 OB)
Classification: Main-belt Asteroid          SPK-ID: 2021100
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2064697708372814 3.6386e-08  
a 3.092038900869508 2.1936e-08 au
q 2.453626337587021 1.0525e-07 au
i 17.68603846293126 4.6733e-06 deg
node 49.32310901519897 1.1479e-05 deg
peri 230.9481308381845 1.6493e-05 deg
M 134.2892602885029 1.3819e-05 deg
tp 2458655.693760812460
(2019-Jun-21.19376081)
7.3511e-05 TDB
period 1985.938752917137
5.44
2.1134e-05
5.786e-08
d
yr
n .1812744725743418 1.9291e-09 deg/d
Q 3.730451464151995 2.6465e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2286  
   data-arc span      10395 days (28.46 yr)  
   first obs. used      1992-07-26  
   last obs. used      2021-01-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40985  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:30:26  

Additional Information
 Earth MOID = 1.47817 au 
 Jupiter MOID = 1.53393 au 
 T_jup = 3.120 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.38   n/a E2021B10  
diameter diameter 6.972 km 0.260 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 82.9896 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.159   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21100 (1992 OB)          Discovered 1992-Jul-26 by McNaught, R. H. at Siding Spring
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

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