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90632 (2259 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2090632
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1345326390857211 2.9515e-08  
a 2.518758355095956 8.5138e-09 au
q 2.179903146365687 7.6703e-08 au
i .2547785683672165 3.7899e-06 deg
node 244.622480358933 0.00075384 deg
peri 83.0073278221174 0.00075399 deg
M 13.64350666289647 1.6162e-05 deg
tp 2459341.164773802725
(2021-May-06.66477380)
6.5476e-05 TDB
period 1460.085146965435
4.00
7.403e-06
2.027e-08
d
yr
n .2465609630699999 1.2501e-09 deg/d
Q 2.857613563826225 9.6592e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1479  
   data-arc span      17490 days (47.89 yr)  
   first obs. used      1973-09-19  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51812  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 02:01:02  

Additional Information
 Earth MOID = 1.16768 au 
 Jupiter MOID = 2.45377 au 
 T_jup = 3.445 
[ 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 15.59   n/a E2021B10  
rotation period rot_per 2.468 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

90632 (2259 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

Alternate Designations
 2259 T-2 = 1997 XY2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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