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85087 (3090 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2085087
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1842585302975535 6.148e-08  
a 2.376751540325264 9.9498e-09 au
q 1.938814794622485 1.4616e-07 au
i 1.83012723054145 6.7255e-06 deg
node 40.98789901932584 0.00019859 deg
peri 6.06271509863396 0.00019968 deg
M 291.0397077706166 2.0524e-05 deg
tp 2459456.872061373616
(2021-Aug-30.37206137)
7.6674e-05 TDB
period 1338.363558372164
3.66
8.4042e-06
2.301e-08
d
yr
n .2689852079040944 1.6891e-09 deg/d
Q 2.814688286028044 1.1783e-08 au
  Orbit Determination Parameters
   # obs. used (total)      522  
   data-arc span      16654 days (45.60 yr)  
   first obs. used      1973-09-19  
   last obs. used      2019-04-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57166  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:11:13  

Additional Information
 Earth MOID = .947666 au 
 Jupiter MOID = 2.57057 au 
 T_jup = 3.517 
[ 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 16.5   n/a MPO432395  
rotation period rot_per 6.95 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

85087 (3090 T-2)          Discovered 1973-Sep-30 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
 3090 T-2 = 1999 XW240 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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