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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 70 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7338025100902863 5.5539e-09  
a 2.346743987118215 1.6394e-09 au
q .6246973588315824 1.3341e-08 au
i 4.310618873200184 1.1252e-05 deg
node 96.15562269037743 6.9443e-05 deg
peri 249.3716662363393 6.8386e-05 deg
M 43.96673764326917 9.9684e-07 deg
tp 2458840.131621256518
(2019-Dec-22.63162126)
3.4796e-06 TDB
period 1313.097569714542
3.60
1.376e-06
3.767e-09
d
yr
n .2741608912415103 2.8729e-10 deg/d
Q 4.068790615404848 2.8424e-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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37347  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-May-15 19:01:12  

Additional Information
 Earth MOID = .0201078 au 
 Jupiter MOID = 1.38174 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. 2019-August); 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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