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351440 (2005 HX2)
Classification: Main-belt Asteroid          SPK-ID: 2351440
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1390856503817891 9.357e-08  
a 2.528548214235999 2.1468e-08 au
q 2.176863441337273 2.4115e-07 au
i 8.077677966508356 9.4037e-06 deg
node 221.9378419541916 3.7609e-05 deg
peri 337.3158024850431 4.2957e-05 deg
M 288.1716956508744 1.9855e-05 deg
tp 2459293.520765776219
(2021-Mar-20.02076578)
8.2422e-05 TDB
period 1468.60595743303
4.02
1.8703e-05
5.121e-08
d
yr
n .245130423295601 3.1218e-09 deg/d
Q 2.880232987134724 2.4453e-08 au
  Orbit Determination Parameters
   # obs. used (total)      148  
   data-arc span      6790 days (18.59 yr)  
   first obs. used      2001-04-24  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61967  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 20:20:18  

Additional Information
 Earth MOID = 1.17621 au 
 Jupiter MOID = 2.09484 au 
 T_jup = 3.425 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457082.5 (2015-Mar-01.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1394475174536571 9.3558e-08  
q 2.175497322251554 2.4113e-07 au
tp 2456358.098959863231
(2013-Mar-06.59895986)
7.5275e-05 TDB
node 221.9576393156976 3.7632e-05 deg
peri 337.5464700720818 4.2932e-05 deg
i 8.075510880538864 9.4035e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      148  
   data-arc span      6790 days (18.59 yr)  
   first obs. used      2001-04-24  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61967  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 20:20:18  

Additional Information
 Jupiter MOID = 2.09484 au 
 T_jup = 3.425 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.753160609280442E-15 -2.249640249233019E-14 1.399258943981765E-12 -8.897741976940696E-14 2.344385688684747E-13 1.820284534446696E-14
q -2.249640249233019E-14 5.814239532839316E-14 -3.622990684546267E-12 2.291936360242571E-13 -5.676301061621424E-13 -4.631416841960226E-14
tp 1.399258943981765E-12 -3.622990684546267E-12 5.666386676540716E-9 -3.35653308634687E-11 1.560291900098048E-9 -6.268311644831872E-13
node -8.897741976940696E-14 2.291936360242571E-13 -3.35653308634687E-11 1.416142736416198E-9 -1.408210109730291E-9 -1.157882789909271E-10
peri 2.344385688684747E-13 -5.676301061621424E-13 1.560291900098048E-9 -1.408210109730291E-9 1.843130838875541E-9 1.141290539979623E-10
i 1.820284534446696E-14 -4.631416841960226E-14 -6.268311644831872E-13 -1.157882789909271E-10 1.141290539979623E-10 8.842647314492225E-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 17.1   n/a MPO455543  

351440 (2005 HX2)          Discovered 2005-Apr-17 by Spacewatch at Kitt Peak
Reference: 20130127/Numbers.arcLast Updated: 2013-01-31
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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