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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456566.5 (2013-Oct-01.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08046336766647527 3.798e-08  
q 2.41368671104605 9.9892e-08 au
tp 2456254.711293180937
(2012-Nov-23.21129318)
0.00012796 TDB
node 285.8080086540076 0.00011463 deg
peri 160.2581618413293 0.00011826 deg
i 2.102241329556115 4.4417e-06 deg
  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
 Jupiter MOID = 2.30646 au 
 T_jup = 3.396 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.442493752399491E-15 -3.759087045171824E-15 4.567235208864626E-13 -9.972875508637955E-15 1.370124378730233E-13 1.467455240309459E-16
q -3.759087045171824E-15 9.978463624703269E-15 -8.664066540527344E-13 2.63723108527355E-14 -2.781974594570481E-13 -3.454503361939649E-16
tp 4.567235208864626E-13 -8.664066540527344E-13 1.637361711737751E-8 -2.815482630477412E-11 3.739448770331953E-9 -5.733970163301495E-13
node -9.972875508637955E-15 2.63723108527355E-14 -2.815482630477412E-11 1.314034088417548E-8 -1.313742818400673E-8 7.793454128826447E-11
peri 1.370124378730233E-13 -2.781974594570481E-13 3.739448770331953E-9 -1.313742818400673E-8 1.398582980542041E-8 -7.800943155190137E-11
i 1.467455240309459E-16 -3.454503361939649E-16 -5.733970163301495E-13 7.793454128826447E-11 -7.800943155190137E-11 1.972874020342945E-11

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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