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4664 Hanner (1985 PJ)
Classification: Main-belt Asteroid          SPK-ID: 2004664
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06725434430907715 1.1048e-08  
a 2.883324390095063 1.0215e-08 au
q 2.689408298808849 3.0183e-08 au
i 1.494898517141373 7.9843e-07 deg
node 335.0089837912868 2.2553e-05 deg
peri 2.268419779509868 3.0673e-05 deg
M 68.49328284433558 1.7698e-05 deg
tp 2458860.260942363812
(2020-Jan-11.76094236)
8.7914e-05 TDB
period 1788.29303637557
4.90
9.5034e-06
2.602e-08
d
yr
n .2013092891809451 1.0698e-09 deg/d
Q 3.077240481381276 1.0902e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3004  
   data-arc span      25304 days (69.28 yr)  
   first obs. used      1951-11-29  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43214  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:36:51  

Additional Information
 Earth MOID = 1.67794 au 
 Jupiter MOID = 2.18406 au 
 T_jup = 3.290 
[ 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 12.55   n/a MPCxxxxx  
rotation period rot_per 3.011 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

4664 Hanner (1985 PJ)          Discovered 1985-Aug-14 by Bowell, E. at Flagstaff
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1985 PJ = 1978 FA = 1981 XR = 1986 XD4 = 1988 DT = 1990 QC4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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