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78612 (2002 SP57)
Classification: Main-belt Asteroid          SPK-ID: 2078612
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1359724988123607 8.4842e-08  
a 2.612407645815833 1.4441e-08 au
q 2.257192050297737 2.2338e-07 au
i 15.8244754020833 7.4507e-06 deg
node 22.48385344031671 1.3174e-05 deg
peri 1.826752032525008 2.2385e-05 deg
M 51.63622615514397 1.4622e-05 deg
tp 2458779.286391789568
(2019-Oct-22.78639179)
6.2924e-05 TDB
period 1542.267994498321
4.22
1.2788e-05
3.501e-08
d
yr
n .2334224669669704 1.9355e-09 deg/d
Q 2.967623241333928 1.6405e-08 au
  Orbit Determination Parameters
   # obs. used (total)      684  
   data-arc span      8028 days (21.98 yr)  
   first obs. used      1998-10-29  
   last obs. used      2020-10-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53041  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:26:12  

Additional Information
 Earth MOID = 1.26086 au 
 Jupiter MOID = 2.49268 au 
 T_jup = 3.343 
[ 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 15.5   n/a MPO502630  
diameter diameter 2.842 km 0.809 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.219   0.190 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78612 (2002 SP57)          Discovered 2002-Sep-30 by NEAT at Haleakala
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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