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78238 (2002 OK21)
Classification: Main-belt Asteroid          SPK-ID: 2078238
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .186881484478072 4.3248e-08  
a 2.726184465172252 1.0755e-08 au
q 2.216711065359803 1.2019e-07 au
i 3.148358669912374 4.2973e-06 deg
node 3.363553747159836 6.4947e-05 deg
peri 332.8480037952434 6.5713e-05 deg
M 335.017296841754 8.238e-06 deg
tp 2459114.595420135684
(2020-Sep-22.09542014)
3.761e-05 TDB
period 1644.111567458188
4.50
9.7292e-06
2.664e-08
d
yr
n .2189632425958558 1.2957e-09 deg/d
Q 3.235657864984701 1.2765e-08 au
  Orbit Determination Parameters
   # obs. used (total)      804  
   data-arc span      9024 days (24.71 yr)  
   first obs. used      1996-02-15  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48804  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:27:37  

Additional Information
 Earth MOID = 1.20784 au 
 Jupiter MOID = 2.14758 au 
 T_jup = 3.329 
[ 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 15.4   n/a MPO474673  
diameter diameter 5.283 km 0.383 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.034   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78238 (2002 OK21)          Discovered 2002-Jul-23 by NEAT at Palomar
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

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