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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1683889922593663 6.0186e-08  
a 3.146848839070237 2.8234e-08 AU
q 2.616954134266643 1.8496e-07 AU
i 11.55758423781675 7.373e-06 deg
node 358.2090364042178 2.8374e-05 deg
peri 159.9913281252858 3.4805e-05 deg
M 21.83879851497054 1.933e-05 deg
tp 2456876.808889024425
(2014-Aug-07.30888902)
0.00010906 JED
period 2038.976636955667
5.58
2.7441e-05
7.513e-08
d
yr
n .1765591588815381 2.3761e-09 deg/d
Q 3.676743543873831 3.2988e-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 = 1.62948 AU 
 T_jup = 3.156 
[ 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 13.1 mag n/a MPO279688  
rotation period rot_per 3.1914 h n/a LCDB (Rev. 2015-July); 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., in press.]

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

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