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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1725259364941271 2.0807e-07  
a 2.476175311784071 3.1681e-08 au
q 2.048970847194887 4.947e-07 au
i 6.159432449385263 6.9354e-06 deg
node 299.6186374913207 7.0695e-05 deg
peri 42.56022267134527 8.4834e-05 deg
M 109.3687650228013 6.8134e-05 deg
tp 2458168.124260202154
(2018-Feb-18.62426020)
0.00026185 TDB
period 1423.214994653854
3.90
2.7314e-05
7.478e-08
d
yr
n .2529484310889776 4.8545e-09 deg/d
Q 2.903379776373255 3.7147e-08 au
  Orbit Determination Parameters
   # obs. used (total)      266  
   data-arc span      7441 days (20.37 yr)  
   first obs. used      1998-08-17  
   last obs. used      2018-12-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58496  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 11:05:32  

Additional Information
 Earth MOID = 1.04437 au 
 Jupiter MOID = 2.49437 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 16.4   n/a MPO325424  
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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