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JPL Small-Body Database Browser
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52868 (1998 SJ25)
Classification: Main-belt Asteroid          SPK-ID: 2052868
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09693411537309829 3.3855e-08  
a 2.24987773569155 7.9905e-09 au
q 2.03178782768466 7.8339e-08 au
i 5.672554483079672 3.4886e-06 deg
node 109.2821608394419 4.179e-05 deg
peri 4.574270081312305 4.7587e-05 deg
M 310.5180891433154 2.345e-05 deg
tp 2458769.926276230239
(2019-Oct-13.42627623)
8.0632e-05 TDB
period 1232.641552981705
3.37
6.5666e-06
1.798e-08
d
yr
n .292055706810448 1.5559e-09 deg/d
Q 2.467967643698439 8.765e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1283  
   data-arc span      7746 days (21.21 yr)  
   first obs. used      1998-09-22  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52997  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 05:06:24  

Additional Information
 Earth MOID = 1.04861 au 
 Jupiter MOID = 2.60307 au 
 T_jup = 3.615 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0   n/a MPO351207  
diameter diameter 2.509 km 0.587 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.370   0.227 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52868 (1998 SJ25)          Discovered 1998-Sep-22 by LONEOS at Anderson Mesa
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 SJ25 = 2000 EK55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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