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 ]  
7225 Huntress (1983 BH)
Classification: Main-belt Asteroid          SPK-ID: 2007225
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2026149018657337 3.2958e-08  
a 2.342769349864015 7.3962e-09 au
q 1.868089367947269 7.6357e-08 au
i 6.869084194421751 3.6124e-06 deg
node 275.7222027154185 3.5961e-05 deg
peri 203.7864623886228 3.7491e-05 deg
M 157.1609780574229 1.0508e-05 deg
tp 2458428.712114954724
(2018-Nov-06.21211495)
3.7561e-05 TDB
period 1309.763028714984
3.59
6.2025e-06
1.698e-08
d
yr
n .274858880658128 1.3016e-09 deg/d
Q 2.817449331780761 8.8948e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1981  
   data-arc span      21381 days (58.54 yr)  
   first obs. used      1960-10-26  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40612  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 01:26:27  

Additional Information
 Earth MOID = .886545 au 
 Jupiter MOID = 2.29378 au 
 T_jup = 3.526 
[ 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 13.2   n/a MPO458903  
diameter diameter 6.680 km 0.224 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.43995 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2007) http://www.asu.cas.cz/~ppravec/neo.htm]
[Pray, D.P.; Pravec, P.; Kusnirak, P.; Hornoch, K.; et al. (2008) CBET 1233.]
[Higgins, D.J. (2012) http://www.david-higgins.com/Astronomy/asteroid/lightcurves.htm]
geometric albedo albedo 0.165   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

7225 Huntress           Discovered 1983 Jan. 22 by E. Bowell at the Anderson Mesa Station of the Lowell Observatory.
Named in honor of Wesley T. Huntress, Jr. (b. 1942), planetary cosmochemist and highly regarded director of NASA space science programs during the 1990s. Gaining international recognition for pioneering studies of chemical evolution in interstellar clouds, comets and planetary atmospheres, Huntress was instrumental in developing the astrochemical research group at the Jet Propulsion Laboratory. During his six years as NASA Associate Administrator for Space Science, the rate at which science missions were launched increased dramatically, along with the public awareness of space science. The naming honors Huntress on his departure from NASA after an illustrious 29-year career with the agency. Name proposed by the discoverer following a suggestion by M. S. Allen, who prepared the citation.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19980808/MPCPages.arcLast Updated: 2009-11-17

Alternate Designations
 1983 BH = 1989 XJ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-24 08:50 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin