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312589 (2009 HR102)
Classification: Main-belt Asteroid          SPK-ID: 2312589
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1853920589695288 6.139e-08  
a 2.736213000705825 3.0026e-08 au
q 2.228940838725779 1.807e-07 au
i 15.07469366769605 6.267e-06 deg
node 100.08230130936 2.156e-05 deg
peri 267.6583509577985 3.4489e-05 deg
M 37.11241322249543 2.0459e-05 deg
tp 2458830.072381911359
(2019-Dec-12.57238191)
9.4145e-05 TDB
period 1653.191942654957
4.53
2.7212e-05
7.45e-08
d
yr
n .2177605580522338 3.5844e-09 deg/d
Q 3.24348516268587 3.5592e-08 au
  Orbit Determination Parameters
   # obs. used (total)      194  
   data-arc span      7029 days (19.24 yr)  
   first obs. used      2001-07-29  
   last obs. used      2020-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61903  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 18:46:51  

Additional Information
 Earth MOID = 1.28819 au 
 Jupiter MOID = 2.40681 au 
 T_jup = 3.278 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457506.5 (2016-Apr-28.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1876294667073803 6.2023e-08  
q 2.221698053517545 1.827e-07 au
tp 2457173.462740805038
(2015-May-30.96274081)
9.6515e-05 TDB
node 100.2660262834944 2.1623e-05 deg
peri 266.8756567897774 3.4e-05 deg
i 15.05767667718353 6.258e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      194  
   data-arc span      7029 days (19.24 yr)  
   first obs. used      2001-07-29  
   last obs. used      2020-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61903  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 18:46:51  

Additional Information
 Jupiter MOID = 2.40681 au 
 T_jup = 3.278 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.846823301871178E-15 -1.125347760450668E-14 3.71648994950283E-13 -5.629177002385729E-15 -1.616322038120796E-13 -1.945303565078206E-14
q -1.125347760450668E-14 3.338054098115117E-14 -1.807795707924018E-12 1.73036377937738E-14 3.050441521518889E-13 6.307535616906303E-14
tp 3.71648994950283E-13 -1.807795707924018E-12 9.31507173194876E-9 -8.186678344729327E-11 2.529392634549268E-9 -1.93855663120692E-11
node -5.629177002385729E-15 1.73036377937738E-14 -8.186678344729327E-11 4.67562070116399E-10 -4.719639084794431E-10 -4.659416873404075E-11
peri -1.616322038120796E-13 3.050441521518889E-13 2.529392634549268E-9 -4.719639084794431E-10 1.156009666238403E-9 4.121202445732639E-11
i -1.945303565078206E-14 6.307535616906303E-14 -1.93855663120692E-11 -4.659416873404075E-11 4.121202445732639E-11 3.916314543850589E-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 16.3   n/a MPO450244  

312589 (2009 HR102)          Discovered 2009-Apr-23 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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