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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1544270732405318 4.6997e-08  
a 2.796568426128837 1.172e-08 au
q 2.364702548964881 1.278e-07 au
i 13.73208067844133 5.2074e-06 deg
node 15.55596662654686 1.322e-05 deg
peri 332.99840871754 1.9107e-05 deg
M 90.82272332161401 1.3556e-05 deg
tp 2458965.548277125406
(2020-Apr-26.04827713)
6.368e-05 TDB
period 1708.191678920212
4.68
1.0738e-05
2.94e-08
d
yr
n .2107491825668911 1.3248e-09 deg/d
Q 3.228434303292794 1.353e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1658  
   data-arc span      17371 days (47.56 yr)  
   first obs. used      1973-09-29  
   last obs. used      2021-04-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48044  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:09:32  

Additional Information
 Earth MOID = 1.36731 au 
 Jupiter MOID = 2.24049 au 
 T_jup = 3.268 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.16   n/a E2021B10  
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

Alternate Designations
 2309 T-2 = 1997 XB14 = 2001 QT25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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