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2039 Payne-Gaposchkin (1974 CA)
Classification: Main-belt Asteroid          SPK-ID: 2002039
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1336169528991837 5.7028e-08  
a 3.178017850569645 2.8365e-08 au
q 2.753380789117316 1.7418e-07 au
i 2.525448402457301 5.8396e-06 deg
node 95.87761839311464 0.0001529 deg
peri 41.93705868905617 0.00015552 deg
M 153.3445425228059 2.7603e-05 deg
tp 2456519.047835210302
(2013-Aug-14.54783521)
0.0001546 JED
period 2069.345110714312
5.67
2.7704e-05
7.585e-08
d
yr
n .1739680820449193 2.3291e-09 deg/d
Q 3.602654912021975 3.2155e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1198  
   data-arc span      14742 days (40.36 yr)  
   first obs. used      1974-02-14  
   last obs. used      2014-06-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50963  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-05 13:13:46  

Additional Information
 Earth MOID = 1.76774 au 
 Jupiter MOID = 1.43301 au 
 T_jup = 3.185 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.6 mag n/a MPO279535  
diameter diameter 23 km n/a DASTCOM value unverified
rotation period rot_per 27.6329 h n/a LCDB (Rev. 2015-December); 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 0.0253   0.007 EAR-A-5-DDR-ALBEDOS-V1.0:IMPS IMPS quality code 2: from the PDS IMPS singleton file

2039 Payne-Gaposchkin (1974 CA)          Discovered 1974-Feb-14 by Harvard College at Agassiz Station
Discovered at Oak Ridge Observatory (until 1981 Harvard College's Agassiz Station). The principal observers are R. E. McCrosky, C.-Y. Shao, G. Schwartz, and J. H. Bulger, with some assistance from others.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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