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72902 (2001 KE71)
Classification: Main-belt Asteroid          SPK-ID: 2072902
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1906405733533023 6.458e-08  
a 2.977047219214319 1.906e-08 au
q 2.409501230443447 1.9331e-07 au
i 11.06290518986541 4.3751e-06 deg
node 59.27702817513801 2.4848e-05 deg
peri 312.5252883546545 2.6922e-05 deg
M 157.2623056347292 1.0445e-05 deg
tp 2458380.905284888617
(2018-Sep-19.40528489)
5.3094e-05 TDB
period 1876.190840832612
5.14
1.8018e-05
4.933e-08
d
yr
n .191878135296855 1.8427e-09 deg/d
Q 3.544593207985192 2.2693e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1005  
   data-arc span      12180 days (33.35 yr)  
   first obs. used      1987-09-19  
   last obs. used      2021-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52167  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-23 20:51:48  

Additional Information
 Earth MOID = 1.42556 au 
 Jupiter MOID = 1.97111 au 
 T_jup = 3.205 
[ 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 14.41   n/a E2021B10  
diameter diameter 5.001 km 2.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 20.1742 h n/a LCDB (Rev. 2020-October); 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.148   0.102 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

72902 (2001 KE71)          Discovered 2001-May-24 by LONEOS at Anderson Mesa
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 KE71 = 1987 SQ8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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