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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1334381583318054 5.704e-08  
a 3.178558794648781 2.8398e-08 au
q 2.754417762941485 1.7427e-07 au
i 2.525252561142885 5.8388e-06 deg
node 95.87467725615198 0.00015291 deg
peri 41.9808807048579 0.00015555 deg
M 188.0840293575034 2.7815e-05 deg
tp 2458588.956412943638
(2019-Apr-15.45641294)
0.00016554 JED
period 2069.873481386419
5.67
2.7739e-05
7.595e-08
d
yr
n .1739236737111434 2.3308e-09 deg/d
Q 3.602699826356078 3.2188e-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 = 1.76742 au 
 Jupiter MOID = 1.43221 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. 2016-February); 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. (2016) 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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