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52891 (1998 SM61)
Classification: Main-belt Asteroid          SPK-ID: 2052891
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2264757801045169 4.1386e-08  
a 2.353649064361459 8.5067e-09 au
q 1.820604556417931 9.7212e-08 au
i 4.418722987133685 5.3613e-06 deg
node 329.6041594185065 5.2371e-05 deg
peri 331.1464420911853 5.3558e-05 deg
M 47.916150337923 1.2986e-05 deg
tp 2458824.954214182098
(2019-Dec-07.45421418)
4.7116e-05 TDB
period 1318.89733312795
3.61
7.1503e-06
1.958e-08
d
yr
n .2729552869336763 1.4798e-09 deg/d
Q 2.886693572304987 1.0433e-08 au
  Orbit Determination Parameters
   # obs. used (total)      846  
   data-arc span      9598 days (26.28 yr)  
   first obs. used      1993-01-29  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54751  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:48:04  

Additional Information
 Earth MOID = .806691 au 
 Jupiter MOID = 2.35513 au 
 T_jup = 3.517 
[ 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 15.6   n/a MPO474413  
diameter diameter 4.669 km 0.397 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.056   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52891 (1998 SM61)          Discovered 1998-Sep-17 by LONEOS at Anderson Mesa
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 SM61 = 2000 BQ31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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