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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457150.5 (2015-May-08.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0857951185676893 5.8721e-08  
q 2.727619872602952 1.7797e-07 au
tp 2456769.092836595427
(2014-Apr-21.59283660)
0.00018082 TDB
node 114.9671704102149 2.5839e-05 deg
peri 137.9476214901372 4.4263e-05 deg
i 12.91037355769983 5.7485e-06 deg
  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
 Jupiter MOID = 1.91547 au 
 T_jup = 3.215 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.448115591263975E-15 -1.037427510943997E-14 -1.810180617304576E-14 -2.89860744956879E-14 5.215179218713442E-14 -5.411152342472089E-15
q -1.037427510943997E-14 3.16720309280112E-14 -2.018564017247201E-12 8.594189477205135E-14 -5.507787723888436E-13 1.927976401591981E-14
tp -1.810180617304576E-14 -2.018564017247201E-12 3.269605582403194E-8 6.418699681696938E-13 6.538956012173381E-9 -1.210334574863326E-11
node -2.89860744956879E-14 8.594189477205135E-14 6.418699681696938E-13 6.676762058151973E-10 -6.509436950112538E-10 -4.785052454800501E-11
peri 5.215179218713442E-14 -5.507787723888436E-13 6.538956012173381E-9 -6.509436950112538E-10 1.959191346842904E-9 4.444711387867501E-11
i -5.411152342472089E-15 1.927976401591981E-14 -1.210334574863326E-11 -4.785052454800501E-11 4.444711387867501E-11 3.304563876527809E-11

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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