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160881 (2001 PJ12)
Classification: Main-belt Asteroid          SPK-ID: 2160881
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1894689762835576 7.0535e-08  
a 3.177366012829649 2.4025e-08 au
q 2.575353727100646 2.2526e-07 au
i 19.11224965188222 8.5462e-06 deg
node 5.519259478221655 1.5947e-05 deg
peri 15.12564609578164 2.2419e-05 deg
M 108.7274746629837 1.7993e-05 deg
tp 2458575.707085434829
(2019-Apr-02.20708543)
9.9321e-05 TDB
period 2068.708483671217
5.66
2.3463e-05
6.424e-08
d
yr
n .1740216192090676 1.9737e-09 deg/d
Q 3.779378298558652 2.8577e-08 au
  Orbit Determination Parameters
   # obs. used (total)      685  
   data-arc span      11058 days (30.28 yr)  
   first obs. used      1990-10-09  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52974  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 11:02:38  

Additional Information
 Earth MOID = 1.5796 au 
 Jupiter MOID = 1.71304 au 
 T_jup = 3.088 
[ 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 14.46   n/a E2020-QM9  
rotation period rot_per 17.8159 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.]

160881 (2001 PJ12)          Discovered 2001-Aug-12 by NEAT at Palomar
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30

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