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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2066462975437565 3.6411e-08  
a 3.091452407116571 2.2004e-08 au
q 2.452615213153198 1.0528e-07 au
i 17.68834222923769 4.6805e-06 deg
node 49.32397998982914 1.1491e-05 deg
peri 230.9076745418134 1.6541e-05 deg
M 98.78758349855894 1.3774e-05 deg
tp 2458655.693681789605
(2019-Jun-21.19368179)
7.3995e-05 TDB
period 1985.373744450416
5.44
2.1197e-05
5.803e-08
d
yr
n .1813260606504363 1.9359e-09 deg/d
Q 3.730289601079944 2.6551e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2277  
   data-arc span      10395 days (28.46 yr)  
   first obs. used      1992-07-26  
   last obs. used      2021-01-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40844  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:50:55  

Additional Information
 Earth MOID = 1.47549 au 
 Jupiter MOID = 1.53508 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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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