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37942 (1998 HY8)
Classification: Main-belt Asteroid          SPK-ID: 2037942
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1489373549816714 4.6683e-08  
a 2.560354246655773 1.2436e-08 au
q 2.179021857342772 1.2086e-07 au
i 4.579347507468797 4.6933e-06 deg
node 104.7230946161075 5.5996e-05 deg
peri 188.1063567748554 5.7603e-05 deg
M 73.14576810079252 1.4193e-05 deg
tp 2458696.456854046865
(2019-Jul-31.95685405)
5.8345e-05 TDB
period 1496.402804770637
4.10
1.0902e-05
2.985e-08
d
yr
n .2405769348014417 1.7528e-09 deg/d
Q 2.941686635968774 1.4288e-08 au
  Orbit Determination Parameters
   # obs. used (total)      996  
   data-arc span      7836 days (21.45 yr)  
   first obs. used      1998-04-17  
   last obs. used      2019-09-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5315  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 05:44:29  

Additional Information
 Earth MOID = 1.16297 au 
 Jupiter MOID = 2.23419 au 
 T_jup = 3.415 
[ 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 14.9   n/a MPO436033  
diameter diameter 2.363 km 0.452 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.417   0.189 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

37942 (1998 HY8)          Discovered 1998-Apr-17 by Spacewatch at Kitt Peak
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 HY8 = 1999 RC96 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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