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108270 (2001 HL56)
Classification: Main-belt Asteroid          SPK-ID: 2108270
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1433803245109186 4.0059e-08  
a 2.792971361021575 1.8574e-08 au
q 2.392514220928599 1.1385e-07 au
i 13.84065815745826 6.3624e-06 deg
node 190.6653355106926 1.9234e-05 deg
peri 95.96840046900972 3.0174e-05 deg
M 338.0910260587457 2.4416e-05 deg
tp 2459104.257067481206
(2020-Sep-11.75706748)
0.00011609 TDB
period 1704.897015870739
4.67
1.7007e-05
4.656e-08
d
yr
n .2111564491278894 2.1064e-09 deg/d
Q 3.19342850111455 2.1237e-08 au
  Orbit Determination Parameters
   # obs. used (total)      563  
   data-arc span      9331 days (25.55 yr)  
   first obs. used      1993-10-11  
   last obs. used      2019-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60792  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 05:59:54  

Additional Information
 Earth MOID = 1.42576 au 
 Jupiter MOID = 2.09209 au 
 T_jup = 3.271 
[ 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 MPO436520  
diameter diameter 2.735 km 0.821 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.939 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.284   0.133 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

108270 (2001 HL56)          Discovered 2001-Apr-24 by NEAT at Haleakala
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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