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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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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08688751915461913 4.4717e-08  
a 2.98079877978411 1.9893e-08 au
q 2.721804568709552 1.2722e-07 au
i 12.92330144437401 4.1514e-06 deg
node 114.9049003895408 2.0531e-05 deg
peri 136.3164927864846 3.6984e-05 deg
M 144.3255025550959 2.8648e-05 deg
tp 2458642.905024508653
(2019-Jun-08.40502451)
0.0001516 TDB
period 1879.738413336333
5.15
1.8818e-05
5.152e-08
d
yr
n .1915160095925469 1.9172e-09 deg/d
Q 3.239792990858667 2.1622e-08 au
  Orbit Determination Parameters
   # obs. used (total)      721  
   data-arc span      8297 days (22.72 yr)  
   first obs. used      1998-04-23  
   last obs. used      2021-01-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56207  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 10:29:14  

Additional Information
 Earth MOID = 1.72204 au 
 Jupiter MOID = 1.9152 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 14.62   n/a E2021B10  
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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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