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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 ]

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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .185622151990362 5.6608e-08  
a 2.736943644176691 2.4614e-08 au
q 2.22890627506827 1.6253e-07 au
i 15.07296821247917 5.9638e-06 deg
node 100.0803837404359 1.8816e-05 deg
peri 267.7265733625322 2.9789e-05 deg
M 123.2331996915942 1.9124e-05 deg
tp 2458830.361834184038
(2019-Dec-12.86183418)
8.6037e-05 TDB
period 1653.854157838995
4.53
2.2311e-05
6.108e-08
d
yr
n .2176733651475007 2.9364e-09 deg/d
Q 3.244981013285112 2.9183e-08 au
  Orbit Determination Parameters
   # obs. used (total)      249  
   data-arc span      7186 days (19.67 yr)  
   first obs. used      2001-07-29  
   last obs. used      2021-04-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58829  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 05:59:36  

Additional Information
 Earth MOID = 1.28744 au 
 Jupiter MOID = 2.40648 au 
 T_jup = 3.277 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457717.5 (2016-Nov-25.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1874663044747064 5.7446e-08  
q 2.222481452403945 1.6531e-07 au
tp 2457173.496653495623
(2015-May-30.99665350)
8.1298e-05 TDB
node 100.2621726500742 1.887e-05 deg
peri 266.9215809892847 2.938e-05 deg
i 15.0559289299029 5.9568e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      249  
   data-arc span      7186 days (19.67 yr)  
   first obs. used      2001-07-29  
   last obs. used      2021-04-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58829  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 05:59:36  

Additional Information
 Jupiter MOID = 2.40648 au 
 T_jup = 3.277 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.300016282098579E-15 -9.434378772566615E-15 -8.446781169828922E-13 -5.725553596896629E-15 -4.626861201055716E-13 -1.203909749556627E-14
q -9.434378772566615E-15 2.732603065277904E-14 2.261821349364762E-12 1.616857854345769E-14 1.314707604613316E-12 3.850884274561262E-14
tp -8.446781169828922E-13 2.261821349364762E-12 6.609364695157051E-9 -3.784515025784989E-11 1.816588774895897E-9 -1.126281271633703E-11
node -5.725553596896629E-15 1.616857854345769E-14 -3.784515025784989E-11 3.560904595195949E-10 -3.525103350140866E-10 -2.67588665814809E-11
peri -4.626861201055716E-13 1.314707604613316E-12 1.816588774895897E-9 -3.525103350140866E-10 8.632018835159905E-10 2.388813875367312E-11
i -1.203909749556627E-14 3.850884274561262E-14 -1.126281271633703E-11 -2.67588665814809E-11 2.388813875367312E-11 3.548320413440726E-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 16.50   n/a MPCxxxxx  

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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