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181954 (1999 TT263)
Classification: Main-belt Asteroid          SPK-ID: 2181954
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1271243340265961 3.8892e-08  
a 2.280935841380007 1.2633e-08 au
q 1.99097339158718 8.6035e-08 au
i 2.778211035215497 4.4421e-06 deg
node 207.3121890799056 8.696e-05 deg
peri 23.91053541134364 8.8769e-05 deg
M 204.0669496854265 1.8838e-05 deg
tp 2459745.509038712226
(2022-Jun-15.00903871)
6.7429e-05 TDB
period 1258.253164037953
3.44
1.0454e-05
2.862e-08
d
yr
n .2861109435597981 2.377e-09 deg/d
Q 2.570898291172834 1.4239e-08 au
  Orbit Determination Parameters
   # obs. used (total)      324  
   data-arc span      8273 days (22.65 yr)  
   first obs. used      1998-05-24  
   last obs. used      2021-01-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50372  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:44  

Additional Information
 Earth MOID = .979478 au 
 Jupiter MOID = 2.41398 au 
 T_jup = 3.593 
[ 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 17.20   n/a MPCxxxxx  

181954 (1999 TT263)          Discovered 1999-Oct-15 by Spacewatch at Kitt Peak
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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