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78457 (2002 RZ31)
Classification: Main-belt Asteroid          SPK-ID: 2078457
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1535793336242357 3.8041e-08  
a 2.691996350367263 1.0845e-08 au
q 2.278561344758984 1.0572e-07 au
i 2.460338192622095 3.6705e-06 deg
node 268.9567381537518 0.00011758 deg
peri 163.1069925334615 0.00011906 deg
M 343.849799449587 1.6719e-05 deg
tp 2459272.874494921551
(2021-Feb-27.37449492)
7.4893e-05 TDB
period 1613.281401084024
4.42
9.7488e-06
2.669e-08
d
yr
n .2231476788600567 1.3484e-09 deg/d
Q 3.105431355975542 1.251e-08 au
  Orbit Determination Parameters
   # obs. used (total)      814  
   data-arc span      10018 days (27.43 yr)  
   first obs. used      1993-09-09  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52878  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:36:53  

Additional Information
 Earth MOID = 1.2929 au 
 Jupiter MOID = 2.16395 au 
 T_jup = 3.353 
[ 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 15.52   n/a MPCxxxxx  

78457 (2002 RZ31)          Discovered 2002-Sep-04 by LONEOS at Anderson Mesa
Reference: 20040415/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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