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49166 (1998 SL57)
Classification: Main-belt Asteroid          SPK-ID: 2049166
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08457048285343896 3.5845e-08  
a 2.306936617034826 6.829e-09 au
q 2.111837873419912 8.1844e-08 au
i 4.476943952404365 4.0156e-06 deg
node 23.11663578747814 4.0362e-05 deg
peri 146.7137673839582 4.5201e-05 deg
M 259.2217705704851 2.1776e-05 deg
tp 2459358.774702275665
(2021-May-24.27470228)
7.8017e-05 TDB
period 1279.828922867197
3.50
5.6828e-06
1.556e-08
d
yr
n .2812875952150643 1.249e-09 deg/d
Q 2.502035360649741 7.4066e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1884  
   data-arc span      10622 days (29.08 yr)  
   first obs. used      1991-10-01  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5045  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:33:59  

Additional Information
 Earth MOID = 1.11878 au 
 Jupiter MOID = 2.46178 au 
 T_jup = 3.578 
[ 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 14.4   n/a MPO347860  
diameter diameter 3.518 km 0.215 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.272   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49166 (1998 SL57)          Discovered 1998-Sep-17 by LONEOS at Anderson Mesa
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 SL57 = 1999 XA165 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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