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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08546006225852387 3.5225e-08  
a 2.341126594030388 1.0356e-08 au
q 2.141053769549465 8.1713e-08 au
i 6.391444988080752 3.8989e-06 deg
node 249.4964021984861 3.9398e-05 deg
peri 357.6166101454751 4.9059e-05 deg
M 25.28185999821837 2.7818e-05 deg
tp 2458508.615491691963
(2019-Jan-25.11549169)
0.00010119 TDB
period 1308.385656483515
3.58
8.6814e-06
2.377e-08
d
yr
n .275148231881076 1.8257e-09 deg/d
Q 2.541199418511312 1.1241e-08 au
  Orbit Determination Parameters
   # obs. used (total)      887  
   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      .52395  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:59:00  

Additional Information
 Earth MOID = 1.1271 au 
 Jupiter MOID = 2.47649 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-January); 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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