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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1801622987713807 7.8128e-08  
a 2.281121079528161 2.0598e-08 au
q 1.870149062064514 1.7896e-07 au
i 23.5578322512323 1.1023e-05 deg
node 320.2608445158671 1.7849e-05 deg
peri 305.6224873776476 5.2762e-05 deg
M 327.0275075004576 6.3179e-05 deg
tp 2457515.757769547632
(2016-May-07.25776955)
0.00022192 JED
period 1258.406444029772
3.45
1.7045e-05
4.667e-08
d
yr
n .2860760938629483 3.8748e-09 deg/d
Q 2.692093096991808 2.4309e-08 au
  Orbit Determination Parameters
   # obs. used (total)      712  
   data-arc span      22775 days (62.35 yr)  
   first obs. used      1953-01-10  
   last obs. used      2015-05-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49803  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 16:38:42  

Additional Information
 Earth MOID = .920516 au 
 Jupiter MOID = 2.68026 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. 2015-December); 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. (2015) 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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