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JPL Small-Body Database Browser
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52889 (1998 SH61)
Classification: Main-belt Asteroid          SPK-ID: 2052889
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08518497434539438 3.425e-08  
a 2.340365658483996 1.0141e-08 au
q 2.141001669907195 7.9623e-08 au
i 6.391332696583859 3.8564e-06 deg
node 249.4945076810178 3.926e-05 deg
peri 357.4303752413346 4.8808e-05 deg
M 135.5811088633564 2.7621e-05 deg
tp 2458507.983615326653
(2019-Jan-24.48361533)
0.00010073 TDB
period 1307.747812131409
3.58
8.4998e-06
2.327e-08
d
yr
n .2752824334022478 1.7892e-09 deg/d
Q 2.539729647060797 1.1005e-08 au
  Orbit Determination Parameters
   # obs. used (total)      891  
   data-arc span      7715 days (21.12 yr)  
   first obs. used      1998-09-17  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52601  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 10:37:39  

Additional Information
 Earth MOID = 1.12728 au 
 Jupiter MOID = 2.47728 au 
 T_jup = 3.551 
[ 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 15.3   n/a MPO280047  
diameter diameter 2.512 km 0.925 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.567 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.280   0.272 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52889 (1998 SH61)          Discovered 1998-Sep-17 by LONEOS at Anderson Mesa
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SH61 = 2000 CF14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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