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488453 (1994 XD)
Classification: Apollo [NEO, PHA]          SPK-ID: 2488453
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 71 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7338706252718099 5.5564e-09  
a 2.346965671918107 1.6476e-09 au
q .6245965067760924 1.3352e-08 au
i 4.310310828182844 1.125e-05 deg
node 96.15203886095981 6.9461e-05 deg
peri 249.3770724890912 6.8404e-05 deg
M 98.7767196162259 1.0507e-06 deg
tp 2458840.161529074362
(2019-Dec-22.66152907)
3.4788e-06 TDB
period 1313.283636440185
3.60
1.3829e-06
3.786e-09
d
yr
n .2741220479803007 2.8866e-10 deg/d
Q 4.069334837060121 2.8568e-09 au
  Orbit Determination Parameters
   # obs. used (total)      305  
   # delay obs. used      6  
   # Doppler obs. used      2  
   data-arc span      8075 days (22.11 yr)  
   first obs. used      1994-12-01  
   last obs. used      2017-01-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37435  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 17:25:00  

Additional Information
 Earth MOID = .0203172 au 
 Jupiter MOID = 1.38197 au 
 T_jup = 3.127 
[ 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 19.1   n/a MPO264917  
rotation period rot_per 2.7365 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2013) Minor Planet Bull. 40, 94-98.]

488453 (1994 XD)          Discovered 1994-Dec-01 by Spacewatch at Kitt Peak
Reference: Last Updated: 2017-05-15

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