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101229 (1998 SJ71)
Classification: Main-belt Asteroid          SPK-ID: 2101229
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2480964628450933 4.4143e-08  
a 2.36428289167052 8.9793e-09 au
q 1.777712669081895 1.0554e-07 au
i 6.564516258997204 4.6761e-06 deg
node 24.46064591765021 3.7677e-05 deg
peri 318.3773000730002 3.8587e-05 deg
M 5.095091877668779 7.7816e-06 deg
tp 2458981.706957089817
(2020-May-12.20695709)
2.8662e-05 TDB
period 1327.845622827405
3.64
7.5645e-06
2.071e-08
d
yr
n .2711158539901993 1.5445e-09 deg/d
Q 2.950853114259145 1.1207e-08 au
  Orbit Determination Parameters
   # obs. used (total)      795  
   data-arc span      8075 days (22.11 yr)  
   first obs. used      1998-09-21  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58076  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:01:44  

Additional Information
 Earth MOID = .776839 au 
 Jupiter MOID = 2.4766 au 
 T_jup = 3.498 
[ 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 15.7   n/a MPO385425  
diameter diameter 1.774 km 0.282 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.354   0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101229 (1998 SJ71)          Discovered 1998-Sep-21 by Elst, E. W. at La Silla
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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