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4596 (1981 QB)
Classification: Amor [NEO]          SPK-ID: 2004596
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 110 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5199848880133213 7.1748e-08  
a 2.238776803545643 6.6171e-09 au
q 1.07464669806714 1.5909e-07 au
i 37.07697754173663 1.0676e-05 deg
node 154.2294735951797 9.6559e-06 deg
peri 248.3911773594001 1.4185e-05 deg
M 238.5222700900806 1.1625e-05 deg
tp 2459613.365687809997
(2022-Feb-02.86568781)
4.0545e-05 TDB
period 1223.530006049794
3.35
5.4245e-06
1.485e-08
d
yr
n .2942306263189012 1.3045e-09 deg/d
Q 3.402906909024145 1.0058e-08 au
  Orbit Determination Parameters
   # obs. used (total)      477  
   data-arc span      14064 days (38.51 yr)  
   first obs. used      1981-08-28  
   last obs. used      2020-02-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53301  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:32:23  

Additional Information
 Earth MOID = .295046 au 
 Jupiter MOID = 2.88044 au 
 T_jup = 3.218 
[ 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 16.34   n/a MPCxxxxx  
rotation period rot_per 2.49101 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

4596 (1981 QB)          Discovered 1981-Aug-28 by Kowal, C. T. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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