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85084 (2309 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2085084
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1543646912466977 5.2693e-08  
a 2.795693363006359 1.5501e-08 au
q 2.364137020205441 1.4813e-07 au
i 13.73330403829846 5.9521e-06 deg
node 15.56175195269282 1.7491e-05 deg
peri 332.8659607181833 2.2424e-05 deg
M 7.459657493696496 1.5108e-05 deg
tp 2458965.120709702997
(2020-Apr-25.62070970)
7.1525e-05 TDB
period 1707.389986428149
4.67
1.42e-05
3.888e-08
d
yr
n .2108481383056006 1.7536e-09 deg/d
Q 3.227249705807278 1.7893e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1182  
   data-arc span      17111 days (46.85 yr)  
   first obs. used      1973-09-29  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53595  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:54:59  

Additional Information
 Earth MOID = 1.36762 au 
 Jupiter MOID = 2.24041 au 
 T_jup = 3.268 
[ 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 14.1   n/a MPO359336  
diameter diameter 4.816 km 0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.230   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85084 (2309 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

[ show close-approach data ]
Alternate Designations
 2309 T-2 = 1997 XB14 = 2001 QT25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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