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21101 (1992 OJ1)
Classification: Main-belt Asteroid          SPK-ID: 2021101
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1802030974566762 7.7914e-08  
a 2.281202308711266 2.0122e-08 au
q 1.870122586756175 1.7872e-07 au
i 23.5577090551305 1.0929e-05 deg
node 320.2607665300424 1.7445e-05 deg
peri 305.6449305678208 5.1943e-05 deg
M 24.22616412046865 6.2792e-05 deg
tp 2457515.811140400141
(2016-May-07.31114040)
0.00021874 JED
period 1258.473661135233
3.45
1.6651e-05
4.559e-08
d
yr
n .2860608140779477 3.785e-09 deg/d
Q 2.692282030666357 2.3748e-08 au
  Orbit Determination Parameters
   # obs. used (total)      729  
   data-arc span      23104 days (63.26 yr)  
   first obs. used      1953-01-10  
   last obs. used      2016-04-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49429  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:36:10  

Additional Information
 Earth MOID = .921814 au 
 Jupiter MOID = 2.68123 au 
 T_jup = 3.475 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.6 mag n/a MPO267786  
rotation period rot_per 7.8914 h n/a LCDB (Rev. 2016-February); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

21101 (1992 OJ1)          Discovered 1992-Jul-26 by Debehogne, H. at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1992 OJ1 = 1992 OU10 = 1999 NL 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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