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
JPL Small-Body Database Browser
Search: [ help ]  
186875 (2004 HG61)
Classification: Main-belt Asteroid          SPK-ID: 2186875
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1264604512682976 5.0145e-08  
a 2.611607289305686 1.6348e-08 au
q 2.281342252964513 1.2832e-07 au
i 12.29762727015798 5.2489e-06 deg
node 54.10958259087723 2.4775e-05 deg
peri 88.86565656420797 3.3803e-05 deg
M 49.53091603980823 2.1654e-05 deg
tp 2458988.403210687373
(2020-May-18.90321069)
9.2219e-05 TDB
period 1541.559297857101
4.22
1.4475e-05
3.963e-08
d
yr
n .2335297776092237 2.1927e-09 deg/d
Q 2.941872325646858 1.8415e-08 au
  Orbit Determination Parameters
   # obs. used (total)      441  
   data-arc span      6713 days (18.38 yr)  
   first obs. used      2002-12-05  
   last obs. used      2021-04-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55128  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:14:34  

Additional Information
 Earth MOID = 1.33309 au 
 Jupiter MOID = 2.17277 au 
 T_jup = 3.366 
[ 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 15.98   n/a E2021B55  
diameter diameter 3.698 km 0.467 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.068   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

186875 (2004 HG61)          Discovered 2004-Apr-25 by LINEAR at Socorro
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-20 05:06 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin