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JPL Small-Body Database Browser
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117996 (1089 T-2)
Classification: Outer Main-belt Asteroid          SPK-ID: 2117996
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07483874277156434 5.3166e-08  
a 3.215940082676138 3.3498e-08 au
q 2.975263170059975 1.7286e-07 au
i 6.453942496073737 8.9194e-06 deg
node 339.0182732972108 4.1679e-05 deg
peri 249.5929883144657 7.126e-05 deg
M 91.68242964454416 5.9594e-05 deg
tp 2458064.031825472534
(2017-Nov-06.53182547)
0.00034645 TDB
period 2106.494598568709
5.77
3.2912e-05
9.011e-08
d
yr
n .1709000347043889 2.6702e-09 deg/d
Q 3.456616995292301 3.6005e-08 au
  Orbit Determination Parameters
   # obs. used (total)      471  
   data-arc span      16829 days (46.08 yr)  
   first obs. used      1973-09-24  
   last obs. used      2019-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59226  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 13:56:26  

Additional Information
 Earth MOID = 1.97395 au 
 Jupiter MOID = 1.58472 au 
 T_jup = 3.176 
[ 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 14.8   n/a MPO401044  
diameter diameter 6.542 km 0.418 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.065   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

117996 (1089 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1089 T-2 = 2000 HG70 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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