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85463 (1997 JR1)
Classification: Main-belt Asteroid          SPK-ID: 2085463
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1191533374845867 3.4268e-08  
a 3.171674137037896 2.4258e-08 au
q 2.793758578196285 1.1272e-07 au
i 2.043478840273517 4.525e-06 deg
node 160.9806247759333 0.00011997 deg
peri 127.4306365253252 0.00012186 deg
M 325.3848777525258 2.0494e-05 deg
tp 2459198.878515957228
(2020-Dec-15.37851596)
0.00011784 TDB
period 2063.152203653216
5.65
2.367e-05
6.48e-08
d
yr
n .1744902772381743 2.0019e-09 deg/d
Q 3.549589695879508 2.7149e-08 au
  Orbit Determination Parameters
   # obs. used (total)      750  
   data-arc span      9719 days (26.61 yr)  
   first obs. used      1993-09-18  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54445  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:36:58  

Additional Information
 Earth MOID = 1.77805 au 
 Jupiter MOID = 1.60903 au 
 T_jup = 3.190 
[ 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 14.7   n/a MPO432398  
rotation period rot_per 2.84 h n/a LCDB (Rev. 2019-August); 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:
[Chang, C.-H.; Lin, H.-W.; Ip, W.-H.; Chen, W.-P.; et al. (2019) ArXiv:1901.08719.]

85463 (1997 JR1)          Discovered 1997-May-01 by ODAS at Caussols
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

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