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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1534501042138575 3.8107e-08  
a 2.691746894272042 1.1303e-08 au
q 2.278698052828669 1.0581e-07 au
i 2.460358934982426 3.7972e-06 deg
node 268.9552682895048 0.0001283 deg
peri 163.0984972827275 0.00012969 deg
M 299.2150945196502 1.752e-05 deg
tp 2459272.859797602823
(2021-Feb-27.35979760)
7.8504e-05 TDB
period 1613.057162171832
4.42
1.016e-05
2.782e-08
d
yr
n .2231786997029252 1.4058e-09 deg/d
Q 3.104795735715414 1.3038e-08 au
  Orbit Determination Parameters
   # obs. used (total)      740  
   data-arc span      9910 days (27.13 yr)  
   first obs. used      1993-09-09  
   last obs. used      2020-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53663  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:26:47  

Additional Information
 Earth MOID = 1.29354 au 
 Jupiter MOID = 2.16427 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 15.4   n/a MPO439582  

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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