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JPL Small-Body Database Browser
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52890 (1998 SL61)
Classification: Main-belt Asteroid          SPK-ID: 2052890
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1825419062993614 3.7372e-08  
a 2.289262492199412 8.998e-09 au
q 1.871376152853704 8.4508e-08 au
i 4.696785561763948 3.7937e-06 deg
node 266.2083880348959 4.4373e-05 deg
peri 26.24422040252424 4.557e-05 deg
M 38.56463338625949 9.4464e-06 deg
tp 2458464.972158250816
(2018-Dec-12.47215825)
3.3066e-05 TDB
period 1265.149406219694
3.46
7.4591e-06
2.042e-08
d
yr
n .2845513725336924 1.6777e-09 deg/d
Q 2.70714883154512 1.0641e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1141  
   data-arc span      15451 days (42.30 yr)  
   first obs. used      1977-08-14  
   last obs. used      2019-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52232  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 05:06:50  

Additional Information
 Earth MOID = .855863 au 
 Jupiter MOID = 2.47197 au 
 T_jup = 3.573 
[ 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 15.0   n/a MPO296522  

52890 (1998 SL61)          Discovered 1998-Sep-17 by LONEOS at Anderson Mesa
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SL61 = 1977 PH1 = 1987 KM2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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