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JPL Small-Body Database Browser
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376437 (2012 HR28)
Classification: Main-belt Asteroid          SPK-ID: 2376437
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 .1138293277541678 3.3363e-07  
a 2.524633953603612 2.6666e-08 au
q 2.237256567839566 8.451e-07 au
i 15.20191680289782 1.943e-05 deg
node 180.133450499792 3.128e-05 deg
peri 90.33046890104514 0.00046458 deg
M 322.6855777544895 0.00042957 deg
tp 2459152.369399532182
(2020-Oct-29.86939953)
0.0017488 TDB
period 1465.197115256514
4.01
2.3214e-05
6.356e-08
d
yr
n .2457007294455219 3.8927e-09 deg/d
Q 2.812011339367658 2.9701e-08 au
  Orbit Determination Parameters
   # obs. used (total)      110  
   data-arc span      6400 days (17.52 yr)  
   first obs. used      2000-05-04  
   last obs. used      2017-11-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50032  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 14:40:02  

Additional Information
 Earth MOID = 1.28451 au 
 Jupiter MOID = 2.3534 au 
 T_jup = 3.397 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.9   n/a MPO427870  
rotation period rot_per 5.42 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

376437 (2012 HR28)          Discovered 2008-Mar-31 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2013-10-21

Alternate Designations
 2012 HR28 = 2009 RB59 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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