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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0796776806288596 3.8235e-08  
a 2.627390532764893 1.4947e-08 au
q 2.418046149007962 1.0051e-07 au
i 2.104813007891931 4.4445e-06 deg
node 285.6651125223307 0.00011436 deg
peri 161.7001948360848 0.00011804 deg
M 181.9776723001022 3.0969e-05 deg
tp 2459369.732008601655
(2021-Jun-04.23200860)
0.00013596 TDB
period 1555.555006355277
4.26
1.3275e-05
3.634e-08
d
yr
n .231428653136152 1.9749e-09 deg/d
Q 2.836734916521824 1.6138e-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 = 1.4345 au 
 Jupiter MOID = 2.30646 au 
 T_jup = 3.396 
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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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