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2039 Payne-Gaposchkin (1974 CA)
Classification: Main-belt Asteroid          SPK-ID: 2002039
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 .1323491106773571 3.1879e-08  
a 3.177139211443806 1.4619e-08 au
q 2.756647662311058 9.7729e-08 au
i 2.525365907130605 3.5506e-06 deg
node 95.86346002439879 0.00010016 deg
peri 42.05537264605055 0.0001017 deg
M 71.50124415109435 1.6909e-05 deg
tp 2458589.668351951378
(2019-Apr-16.16835195)
9.6521e-05 TDB
period 2068.486990030094
5.66
1.4277e-05
3.909e-08
d
yr
n .1740402534486149 1.2012e-09 deg/d
Q 3.597630760576553 1.6554e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2207  
   data-arc span      16924 days (46.34 yr)  
   first obs. used      1974-02-14  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47355  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:40:08  

Additional Information
 Earth MOID = 1.7709 au 
 Jupiter MOID = 1.43124 au 
 T_jup = 3.185 
[ 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 12.7   n/a MPO384767  
diameter diameter 13.612 km 0.291 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 27.633 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 0.095   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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