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71012 (1999 XH49)
Classification: Main-belt Asteroid          SPK-ID: 2071012
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08048294187862998 3.8368e-08  
a 2.624749885586995 1.4685e-08 au
q 2.413502293099356 1.0089e-07 au
i 2.106052886192379 4.4469e-06 deg
node 285.6638367993214 0.00011431 deg
peri 162.2522012927803 0.00011791 deg
M 274.0612332453894 3.0897e-05 deg
tp 2459371.280538999513
(2021-Jun-05.78053900)
0.00013438 TDB
period 1553.210490219925
4.25
1.3035e-05
3.569e-08
d
yr
n .2317779864782051 1.9451e-09 deg/d
Q 2.835997478074634 1.5867e-08 au
  Orbit Determination Parameters
   # obs. used (total)      724  
   data-arc span      16287 days (44.59 yr)  
   first obs. used      1973-09-19  
   last obs. used      2018-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53064  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-07 04:40:32  

Additional Information
 Earth MOID = 1.43001 au 
 Jupiter MOID = 2.30498 au 
 T_jup = 3.397 
[ 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 15.4   n/a MPO436279  

71012 (1999 XH49)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XH49 = 1417 T-2 = 1994 RN26 = 1998 MN17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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