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

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2026149015653733 3.254e-08  
a 2.342769350572305 7.2554e-09 au
q 1.868089369215724 7.5261e-08 au
i 6.869084615675482 3.5415e-06 deg
node 275.722208693525 3.4922e-05 deg
peri 203.7864568532971 3.6394e-05 deg
M 157.1609801714888 1.0302e-05 deg
tp 2458428.712107003962
(2018-Nov-06.21210700)
3.6776e-05 TDB
period 1309.763029308955
3.59
6.0844e-06
1.666e-08
d
yr
n .2748588805334808 1.2768e-09 deg/d
Q 2.817449331928886 8.7255e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2188  
   data-arc span      21784 days (59.64 yr)  
   first obs. used      1960-10-26  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39889  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:38:40  

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 ]
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