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181044 (2005 PE1)
Classification: Main-belt Asteroid          SPK-ID: 2181044
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07674666977251182 5.962e-08  
a 2.738832991909142 1.6339e-08 au
q 2.52863668071703 1.5781e-07 au
i 8.578081911539362 5.204e-06 deg
node 345.7346726763598 2.4737e-05 deg
peri 3.515520350828111 3.789e-05 deg
M 118.4025813159451 2.7245e-05 deg
tp 2458655.990548187156
(2019-Jun-21.49054819)
0.00012459 TDB
period 1655.566968844669
4.53
1.4815e-05
4.056e-08
d
yr
n .2174481653564426 1.9458e-09 deg/d
Q 2.949029303101253 1.7593e-08 au
  Orbit Determination Parameters
   # obs. used (total)      459  
   data-arc span      22055 days (60.38 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52956  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:28:59  

Additional Information
 Earth MOID = 1.52028 au 
 Jupiter MOID = 2.43068 au 
 T_jup = 3.330 
[ 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 15.88   n/a MPCxxxxx  
rotation period rot_per 27.940 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.]

181044 (2005 PE1)          Discovered 2005-Aug-01 by Siding Spring Survey at Siding Spring
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Alternate Designations
 2005 PE1 = 2001 UY209 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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