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JPL Small-Body Database Browser
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65284 (2002 HE1)
Classification: Main-belt Asteroid          SPK-ID: 2065284
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02047475775323291 6.3485e-08  
a 2.696573440139908 1.8523e-08 au
q 2.641361752189242 1.6601e-07 au
i 4.010947320886648 5.2544e-06 deg
node 172.141959062767 5.6627e-05 deg
peri 182.507362921157 0.00011327 deg
M 231.733913103939 9.7617e-05 deg
tp 2459576.770184963931
(2021-Dec-28.27018496)
0.00043805 TDB
period 1617.397642723178
4.43
1.6665e-05
4.563e-08
d
yr
n .2225797728960923 2.2934e-09 deg/d
Q 2.751785128090575 1.8903e-08 au
  Orbit Determination Parameters
   # obs. used (total)      777  
   data-arc span      15482 days (42.39 yr)  
   first obs. used      1977-09-09  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55659  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 14:37:14  

Additional Information
 Earth MOID = 1.63491 au 
 Jupiter MOID = 2.31007 au 
 T_jup = 3.366 
[ 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 15.0   n/a MPO468575  
diameter diameter 4.569 km 0.302 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.32 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]
geometric albedo albedo 0.102   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

65284 (2002 HE1)          Discovered 2002-Apr-16 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2002 HE1 = 1977 RV19 = 1997 EW8 = 1999 RS77 = 2000 YO75 = 2002 FR9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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