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JPL Small-Body Database Browser
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52861 (1998 SG4)
Classification: Main-belt Asteroid          SPK-ID: 2052861
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0899436018468909 3.8956e-08  
a 2.162848185470091 8.389e-09 au
q 1.968313829420898 8.6168e-08 au
i 2.929245450308426 3.936e-06 deg
node 292.9414226127159 8.7449e-05 deg
peri 291.7406800358704 9.1828e-05 deg
M 61.82109824326454 2.9505e-05 deg
tp 2458800.986771272688
(2019-Nov-13.48677127)
9.4962e-05 TDB
period 1161.816343980233
3.18
6.7595e-06
1.851e-08
d
yr
n .3098596450852862 1.8028e-09 deg/d
Q 2.357382541519283 9.1435e-09 au
  Orbit Determination Parameters
   # obs. used (total)      968  
   data-arc span      7527 days (20.61 yr)  
   first obs. used      1998-09-18  
   last obs. used      2019-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52352  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 10:37:02  

Additional Information
 Earth MOID = .961097 au 
 Jupiter MOID = 2.62637 au 
 T_jup = 3.688 
[ 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 15.9   n/a MPO432086  
diameter diameter 1.706 km 0.283 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.318   0.087 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

52861 (1998 SG4)          Discovered 1998-Sep-18 by LINEAR at Socorro
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SG4 = 2000 AV127 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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