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108274 (2001 HF57)
Classification: Main-belt Asteroid          SPK-ID: 2108274
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1629814997143297 6.5478e-08  
a 2.67485752643288 2.5251e-08 au
q 2.238905235252687 1.7792e-07 au
i 14.25334845009642 7.4392e-06 deg
node 74.99134272784109 2.7393e-05 deg
peri 169.6174627741399 3.5298e-05 deg
M 99.47959404161334 2.6625e-05 deg
tp 2458558.948959498153
(2019-Mar-16.44895950)
0.00011429 TDB
period 1597.899309019806
4.37
2.2626e-05
6.195e-08
d
yr
n .2252957980317506 3.1902e-09 deg/d
Q 3.110809817613073 2.9366e-08 au
  Orbit Determination Parameters
   # obs. used (total)      408  
   data-arc span      8999 days (24.64 yr)  
   first obs. used      1994-11-09  
   last obs. used      2019-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61097  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 15:40:19  

Additional Information
 Earth MOID = 1.22658 au 
 Jupiter MOID = 1.92955 au 
 T_jup = 3.317 
[ 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 15.3   n/a MPO348159  
diameter diameter 2.176 km 0.580 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.340   0.184 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

108274 (2001 HF57)          Discovered 2001-Apr-25 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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