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JPL Small-Body Database Browser
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15621 Erikhovland (2000 HO20)
Classification: Main-belt Asteroid          SPK-ID: 2015621
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1543891464269749 3.7344e-08  
a 2.630498486795987 1.1942e-08 au
q 2.224378070742106 9.8952e-08 au
i 15.99112058192426 3.8769e-06 deg
node 109.7505120690164 1.7072e-05 deg
peri 145.6793691996145 2.2363e-05 deg
M 220.5666674201481 1.6322e-05 deg
tp 2459604.058844017095
(2022-Jan-24.55884402)		 7.2197e-05 TDB
period 1558.315933686228
4.27		 1.0612e-05
2.905e-08		 d
yr
n .2310186222304823 1.5731e-09 deg/d
Q 3.036618902849869 1.3785e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2885  
   data-arc span      16277 days (44.56 yr)  
   first obs. used      1975-07-11  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38126  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:22:53  

Additional Information
 Earth MOID = 1.22498 au 
 Jupiter MOID = 2.12522 au 
 T_jup = 3.329 
[ 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 12.8   n/a MPO502289  
diameter diameter 10.321 km 1.561 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 5.3426 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Casalnuovo, G.B. (2013) Minor Planet Bull. 40, 204-205.]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.151   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

15621 Erikhovland           Discovered 2000 Apr. 29 by JPL/MSSS NEAT at Haleakala.
Erik Hovland (b. 1970) is a computer programmer at the Jet Propulsion Laboratory. He developed the NEAT operations software when it changed telescopes to the MSSS 1.2-m on Maui and has helped deploy the first phase of the Keck Interferometer. His little free time is spent with his son and wife.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010509/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 2000 HO20 = 1975 NX = 1979 MJ9 = 1983 HZ1 = 1992 OG1 = 1998 XL93 
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