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16372 (1981 EP1)
Classification: Main-belt Asteroid          SPK-ID: 2016372
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1681292354114643 6.027e-08  
a 3.147671669872592 2.8059e-08 au
q 2.618456038690586 1.8509e-07 au
i 11.55746203514888 7.373e-06 deg
node 358.2037780176547 2.8369e-05 deg
peri 160.1220834082106 3.4809e-05 deg
M 127.6594798308551 1.9753e-05 deg
tp 2456877.175568269130
(2014-Aug-07.67556827)
0.00010917 JED
period 2039.776409618237
5.58
2.7275e-05
7.467e-08
d
yr
n .1764899320839667 2.3599e-09 deg/d
Q 3.676887301054597 3.2777e-08 au
  Orbit Determination Parameters
   # obs. used (total)      867  
   data-arc span      12496 days (34.21 yr)  
   first obs. used      1981-03-07  
   last obs. used      2015-05-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52505  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:18:30  

Additional Information
 Earth MOID = 1.62918 au 
 Jupiter MOID = 1.31495 au 
 T_jup = 3.155 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.2 mag n/a MPO340815  
rotation period rot_per 3.1914 h n/a LCDB (Rev. 2016-February); 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. (2016) Astron. J. 150, A75.]

16372 (1981 EP1)          Discovered 1981-Mar-07 by Debehogne, H., DeSanctis, G. at La Silla
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1981 EP1 = 1996 XV31 = 1997 XG9 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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