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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1534501052864451 3.807e-08  
a 2.691746895928876 1.1003e-08 au
q 2.278698051344128 1.0578e-07 au
i 2.460358856976408 3.6896e-06 deg
node 268.9552640825273 0.00012233 deg
peri 163.0985034586388 0.00012376 deg
M 299.2150919215944 1.703e-05 deg
tp 2459272.859809495434
(2021-Feb-27.35980950)
7.6209e-05 TDB
period 1613.057163661145
4.42
9.8904e-06
2.708e-08
d
yr
n .2231786994968675 1.3684e-09 deg/d
Q 3.104795740513624 1.2691e-08 au
  Orbit Determination Parameters
   # obs. used (total)      776  
   data-arc span      9930 days (27.19 yr)  
   first obs. used      1993-09-09  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52961  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:06:34  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2112-Jul-03 21:35 00:03 Hygie 0.0025953255422394 0.00257952989732597 0.00261115330574964 3.93855362884308 3.93854984899774 2492636.399390413 2.88562210343494 909.523319858571 63.1445750288977 30.1623244213078 3102.49929441634 T 15 CATAB v2.0f-lin.ifort 2020-Dec-17 22:06:36 2020-Dec-17 22:06
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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