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79139 (1991 SP)
Classification: Main-belt Asteroid          SPK-ID: 2079139
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1970070815965626 4.4783e-08  
a 2.276108420893334 1.06e-08 au
q 1.827698943495778 1.0647e-07 au
i 6.367100403140618 4.1779e-06 deg
node 76.88072324893409 3.9057e-05 deg
peri 267.969355786009 4.0574e-05 deg
M 131.133900503584 1.1098e-05 deg
tp 2458543.621918324584
(2019-Mar-01.12191832)
3.7343e-05 TDB
period 1254.260788183102
3.43
8.7618e-06
2.399e-08
d
yr
n .2870216492389027 2.005e-09 deg/d
Q 2.724517898290891 1.2688e-08 au
  Orbit Determination Parameters
   # obs. used (total)      897  
   data-arc span      10366 days (28.38 yr)  
   first obs. used      1991-09-15  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54531  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 18:36:10  

Additional Information
 Earth MOID = .833874 au 
 Jupiter MOID = 2.70349 au 
 T_jup = 3.575 
[ 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 15.6   n/a MPO449497  
diameter diameter 2.582 km 0.485 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.133   0.066 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

79139 (1991 SP)          Discovered 1991-Sep-30 by McNaught, R. H. at Siding Spring
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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