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37958 (1998 HR57)
Classification: Main-belt Asteroid          SPK-ID: 2037958
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1668554530625119 4.9072e-08  
a 2.580425579016627 1.3041e-08 au
q 2.149867499935713 1.2805e-07 au
i 1.790363311851025 4.6787e-06 deg
node 227.5149272454587 0.00018049 deg
peri 259.1149839111289 0.00018107 deg
M 183.6518495345343 1.5784e-05 deg
tp 2459742.158268139566
(2022-Jun-11.65826814)
6.9152e-05 TDB
period 1514.033324565714
4.15
1.1477e-05
3.142e-08
d
yr
n .2377754796799222 1.8025e-09 deg/d
Q 3.010983658097541 1.5217e-08 au
  Orbit Determination Parameters
   # obs. used (total)      674  
   data-arc span      9662 days (26.45 yr)  
   first obs. used      1992-11-24  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54206  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:02:05  

Additional Information
 Earth MOID = 1.16598 au 
 Jupiter MOID = 2.05685 au 
 T_jup = 3.404 
[ 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 15.3   n/a MPO250576  
diameter diameter 2.336 km 0.527 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.246   0.140 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

37958 (1998 HR57)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 HR57 = 2000 UR15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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