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72818 (2001 HM)
Classification: Main-belt Asteroid          SPK-ID: 2072818
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .139388045210834 2.3077e-08  
a 2.560537537647484 9.2792e-09 au
q 2.203629215585839 5.9642e-08 au
i 13.38466648284695 5.1242e-06 deg
node 33.64428501070908 1.3902e-05 deg
peri 71.8755349069726 2.6664e-05 deg
M 25.89936473622076 2.1291e-05 deg
tp 2459092.833211667628
(2020-Aug-31.33321167)
8.8484e-05 TDB
period 1496.56349468091
4.10
8.1352e-06
2.227e-08
d
yr
n .2405511034309689 1.3076e-09 deg/d
Q 2.91744585970913 1.0573e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1747  
   data-arc span      7841 days (21.47 yr)  
   first obs. used      1999-10-05  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50436  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:16:15  

Additional Information
 Earth MOID = 1.26103 au 
 Jupiter MOID = 2.33567 au 
 T_jup = 3.384 
[ 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 14.54   n/a MPCxxxxx  
diameter diameter 5.395 km 0.294 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.105   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

72818 (2001 HM)          Discovered 2001-Apr-16 by Broughton, J. at Reedy Creek
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2001 HM = 1999 TB274 = 2000 FS2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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