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46953 (1998 SB121)
Classification: Main-belt Asteroid          SPK-ID: 2046953
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1076205616616832 3.3896e-08  
a 2.698098701861995 1.701e-08 au
q 2.407727804148948 9.0171e-08 au
i 6.457660019810369 5.3125e-06 deg
node 177.3477099486108 3.2214e-05 deg
peri 284.8651126942884 4.0838e-05 deg
M 157.5652952551568 2.6246e-05 deg
tp 2457891.994471869686
(2017-May-18.49447187)
0.00011764 TDB
period 1618.770108696036
4.43
1.5309e-05
4.191e-08
d
yr
n .2223910597719092 2.1031e-09 deg/d
Q 2.988469599575041 1.8841e-08 au
  Orbit Determination Parameters
   # obs. used (total)      987  
   data-arc span      7209 days (19.74 yr)  
   first obs. used      1998-09-15  
   last obs. used      2018-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56197  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 00:00:55  

Additional Information
 Earth MOID = 1.4345 au 
 Jupiter MOID = 2.15438 au 
 T_jup = 3.351 
[ 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 14.6   n/a MPO347849  
diameter diameter 6.275 km 0.222 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.0 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Galad, A.; Kornos, L.; Vilagi, J. (2010) Minor Planet Bull. 37, 9-15.]
geometric albedo albedo 0.103   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46953 (1998 SB121)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 SB121 = 2000 CB45 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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