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32798 (1990 OA2)
Classification: Main-belt Asteroid          SPK-ID: 2032798
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2147905574221737 7.5145e-08  
a 2.88034723574033 1.9118e-08 au
q 2.261675847406247 2.1275e-07 au
i 14.73796496365683 5.9827e-06 deg
node 352.4680907191158 1.7611e-05 deg
peri 354.2461298332372 2.1215e-05 deg
M 21.0167648523042 1.8007e-05 deg
tp 2458896.261282084404
(2020-Feb-16.76128208)
8.8539e-05 TDB
period 1785.524019197488
4.89
1.7776e-05
4.867e-08
d
yr
n .2016214826176372 2.0073e-09 deg/d
Q 3.499018624074412 2.3224e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1271  
   data-arc span      10686 days (29.26 yr)  
   first obs. used      1990-07-29  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48018  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 04:27:25  

Additional Information
 Earth MOID = 1.2557 au 
 Jupiter MOID = 1.93123 au 
 T_jup = 3.212 
[ 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 14.0   n/a MPO400329  
diameter diameter 7.610 km 0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 10.509 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 0.101   0.002 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

32798 (1990 OA2)          Discovered 1990-Jul-29 by Holt, H. E. at Palomar
Reference: 20020128/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 OA2 = 2000 OM47 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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