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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1825205691178065 3.7083e-08  
a 2.289820088154308 8.9106e-09 au
q 1.871880822486998 8.3714e-08 au
i 4.696703094293129 3.7655e-06 deg
node 266.2085632989143 4.3265e-05 deg
peri 26.33077070694896 4.4459e-05 deg
M 152.2698100698475 9.5445e-06 deg
tp 2458465.182090034056
(2018-Dec-12.68209003)
3.2884e-05 TDB
period 1265.611663266277
3.47
7.3875e-06
2.023e-08
d
yr
n .2844474418566244 1.6604e-09 deg/d
Q 2.707759353821618 1.0537e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1170  
   data-arc span      15508 days (42.46 yr)  
   first obs. used      1977-08-14  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51929  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 10:37:39  

Additional Information
 Earth MOID = .857054 au 
 Jupiter MOID = 2.4731 au 
 T_jup = 3.572 
[ 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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