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37974 (1998 HE115)
Classification: Main-belt Asteroid          SPK-ID: 2037974
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08708855766364136 5.8551e-08  
a 2.98214958567209 2.3507e-08 au
q 2.722438479518682 1.7768e-07 au
i 12.92318754157701 5.7529e-06 deg
node 114.9047253500554 2.5798e-05 deg
peri 136.65755338396 4.3832e-05 deg
M 68.12698328935845 3.1663e-05 deg
tp 2458644.533424434597
(2019-Jun-10.03342443)
0.00016717 TDB
period 1881.01631712147
5.15
2.2241e-05
6.089e-08
d
yr
n .1913858995922534 2.2629e-09 deg/d
Q 3.241860691825498 2.5554e-08 au
  Orbit Determination Parameters
   # obs. used (total)      562  
   data-arc span      7766 days (21.26 yr)  
   first obs. used      1998-04-23  
   last obs. used      2019-07-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5882  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 04:41:38  

Additional Information
 Earth MOID = 1.72241 au 
 Jupiter MOID = 1.91547 au 
 T_jup = 3.215 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6   n/a MPO351097  
diameter diameter 5.073 km 0.281 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.131   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

37974 (1998 HE115)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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