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90623 (1202 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2090623
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .173853763453702 4.4598e-08  
a 2.56786844986617 1.3108e-08 au
q 2.121434855802913 1.1489e-07 au
i 14.96752791162862 5.7497e-06 deg
node 3.844031465734836 2.1121e-05 deg
peri 25.08490004790826 3.2778e-05 deg
M 104.3274595870199 2.4189e-05 deg
tp 2458564.934256992988
(2019-Mar-22.43425699)
9.9255e-05 TDB
period 1502.995166404238
4.11
1.1509e-05
3.151e-08
d
yr
n .239521728377386 1.834e-09 deg/d
Q 3.014302043929427 1.5387e-08 au
  Orbit Determination Parameters
   # obs. used (total)      563  
   data-arc span      17014 days (46.58 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56562  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:33:35  

Additional Information
 Earth MOID = 1.13284 au 
 Jupiter MOID = 2.4836 au 
 T_jup = 3.363 
[ 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 15.8   n/a MPO453344  
diameter diameter 1.980 km 0.387 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.179   0.086 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

90623 (1202 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1202 T-2 = 2002 TR139 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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