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78585 (2002 SF12)
Classification: Main-belt Asteroid          SPK-ID: 2078585
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2429508760988194 4.3468e-08  
a 3.076339240373255 1.5425e-08 au
q 2.328939926747397 1.3685e-07 au
i 2.56868676405684 5.1797e-06 deg
node 148.1368662693914 8.987e-05 deg
peri 337.4255607385998 9.0627e-05 deg
M 15.40899687839875 9.1357e-06 deg
tp 2458916.142901988847
(2020-Mar-07.64290199)
4.9924e-05 TDB
period 1970.83272348425
5.40
1.4823e-05
4.058e-08
d
yr
n .182663904303128 1.3739e-09 deg/d
Q 3.823738553999114 1.9173e-08 au
  Orbit Determination Parameters
   # obs. used (total)      954  
   data-arc span      8241 days (22.56 yr)  
   first obs. used      1997-10-28  
   last obs. used      2020-05-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53071  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:26:18  

Additional Information
 Earth MOID = 1.34458 au 
 Jupiter MOID = 1.26029 au 
 T_jup = 3.182 
[ 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 14.8   n/a MPO417367  
diameter diameter 5.874 km 0.147 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.631 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.051   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78585 (2002 SF12)          Discovered 2002-Sep-27 by NEAT at Palomar
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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