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72861 (2001 HN49)
Classification: Main-belt Asteroid          SPK-ID: 2072861
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0560875014750143 4.9796e-08  
a 3.024754217059499 2.329e-08 au
q 2.855103310448618 1.5876e-07 au
i 10.57787365506598 4.8745e-06 deg
node 337.9872336539876 2.1389e-05 deg
peri 196.8595157941817 4.2993e-05 deg
M 302.4880166879843 3.7236e-05 deg
tp 2459507.465386459316
(2021-Oct-19.96538646)
0.0001989 TDB
period 1921.469800925229
5.26
2.2192e-05
6.076e-08
d
yr
n .1873565745486357 2.1639e-09 deg/d
Q 3.194405123670379 2.4596e-08 au
  Orbit Determination Parameters
   # obs. used (total)      881  
   data-arc span      11340 days (31.05 yr)  
   first obs. used      1990-03-04  
   last obs. used      2021-03-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45646  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:16:19  

Additional Information
 Earth MOID = 1.86211 au 
 Jupiter MOID = 1.79379 au 
 T_jup = 3.217 
[ 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 14.76   n/a MPCxxxxx  
diameter diameter 5.442 km 0.398 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.095   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

72861 (2001 HN49)          Discovered 2001-Apr-21 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 HN49 = 1990 EX9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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