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41222 (1999 XH15)
Classification: Main-belt Asteroid          SPK-ID: 2041222
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2887184522481226 3.8364e-08  
a 3.071432990416207 1.5199e-08 au
q 2.184653611239417 1.1899e-07 au
i 1.037024034523783 5.1552e-06 deg
node 214.4662670672005 0.00018918 deg
peri 115.3356839699586 0.00018943 deg
M 34.60768550177371 7.4113e-06 deg
tp 2459011.492060040859
(2020-Jun-10.99206004)
4.0683e-05 TDB
period 1966.119877672937
5.38
1.4594e-05
3.996e-08
d
yr
n .183101754927624 1.3591e-09 deg/d
Q 3.958212369592997 1.9587e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1001  
   data-arc span      25750 days (70.50 yr)  
   first obs. used      1950-08-14  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49284  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 08:57:54  

Additional Information
 Earth MOID = 1.17207 au 
 Jupiter MOID = 1.42497 au 
 T_jup = 3.165 
[ 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 14.96   n/a MPCxxxxx  

41222 (1999 XH15)          Discovered 1999-Dec-02 by Sarounova, L. at Ondrejov
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 XH15 = 1993 QR2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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