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37978 (1998 HR124)
Classification: Main-belt Asteroid          SPK-ID: 2037978
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1756578508688429 4.0838e-08  
a 2.856115489520996 1.8846e-08 au
q 2.354416380798525 1.1844e-07 au
i 18.53893075752863 5.4763e-06 deg
node 68.55111964376438 1.3271e-05 deg
peri 261.4069074945428 2.0645e-05 deg
M 125.0223706421426 1.6993e-05 deg
tp 2458388.223906612689
(2018-Sep-26.72390661)
8.2071e-05 TDB
period 1763.039626326944
4.83
1.745e-05
4.778e-08
d
yr
n .2041928012418029 2.0211e-09 deg/d
Q 3.357814598243468 2.2157e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1881  
   data-arc span      7974 days (21.83 yr)  
   first obs. used      1998-04-03  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41489  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 04:41:57  

Additional Information
 Earth MOID = 1.42695 au 
 Jupiter MOID = 2.15195 au 
 T_jup = 3.205 
[ 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 13.9   n/a MPO412452  
diameter diameter 10.689 km 0.070 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

37978 (1998 HR124)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 HR124 = 1999 ST12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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