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136999 (1998 SG76)
Classification: Main-belt Asteroid          SPK-ID: 2136999
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1728829355496519 1.8391e-07  
a 2.475451385662151 2.8314e-08 au
q 2.047488083298425 4.3825e-07 au
i 6.160150414154585 6.7618e-06 deg
node 299.6216804624156 6.7247e-05 deg
peri 42.54153763662772 8.0941e-05 deg
M 210.5789559679281 6.4583e-05 deg
tp 2459590.958386488501
(2022-Jan-11.45838649)
0.00026434 TDB
period 1422.59091089094
3.89
2.4407e-05
6.682e-08
d
yr
n .2530593983442079 4.3417e-09 deg/d
Q 2.903414688025877 3.3209e-08 au
  Orbit Determination Parameters
   # obs. used (total)      274  
   data-arc span      7835 days (21.45 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58525  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 07:43:31  

Additional Information
 Earth MOID = 1.0438 au 
 Jupiter MOID = 2.49757 au 
 T_jup = 3.453 
[ 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 16.3   n/a MPO469442  
diameter diameter 1.804 km 0.226 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.180   0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

136999 (1998 SG76)          Discovered 1998-Sep-19 by LINEAR at Socorro
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Alternate Designations
 1998 SG76 = 2002 TX128 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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