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 ]  
46241 (2001 HG12)
Classification: Main-belt Asteroid          SPK-ID: 2046241
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02973754151085249 4.1786e-08  
a 2.972798837084607 2.3496e-08 au
q 2.88439510826339 1.235e-07 au
i 8.68366251789074 7.3674e-06 deg
node 212.1354013118289 3.3283e-05 deg
peri 76.17011004052077 0.00013482 deg
M 115.330791705744 0.00013137 deg
tp 2458000.723448202589
(2017-Sep-04.22344820)
0.00068245 TDB
period 1872.176159147222
5.13
2.2196e-05
6.077e-08
d
yr
n .1922895974511183 2.2797e-09 deg/d
Q 3.061202565905825 2.4195e-08 au
  Orbit Determination Parameters
   # obs. used (total)      845  
   data-arc span      10051 days (27.52 yr)  
   first obs. used      1991-06-08  
   last obs. used      2018-12-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5237  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:36:45  

Additional Information
 Earth MOID = 1.8836 au 
 Jupiter MOID = 1.97642 au 
 T_jup = 3.244 
[ 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 14.4   n/a MPO452802  
diameter diameter 4.541 km 1.166 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.196   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46241 (2001 HG12)          Discovered 2001-Apr-18 by LINEAR at Socorro
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 HG12 = 1996 HP21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin