Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1545709219882567 3.7601e-08  
a 2.630038271225283 1.2152e-08 au
q 2.22351083077759 9.9388e-08 au
i 15.99009479224412 3.9336e-06 deg
node 109.7540022556866 1.8429e-05 deg
peri 145.5881592556595 2.4077e-05 deg
M 128.2636726623336 1.6743e-05 deg
tp 2458045.436461913448
(2017-Oct-18.93646191)
7.1619e-05 TDB
period 1557.907001752643
4.27
1.0798e-05
2.956e-08
d
yr
n .2310792618526012 1.6016e-09 deg/d
Q 3.036565711672976 1.4031e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2780  
   data-arc span      16220 days (44.41 yr)  
   first obs. used      1975-07-11  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38358  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:01:20  

Additional Information
 Earth MOID = 1.22379 au 
 Jupiter MOID = 2.12439 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-January); 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 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-28 23:46 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin