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22501 (1997 PR3)
Classification: Main-belt Asteroid          SPK-ID: 2022501
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1752397612133623 5.0861e-08  
a 2.372264427678037 1.3822e-08 au
q 1.956549375836785 1.1572e-07 au
i 1.568063215121291 5.8385e-06 deg
node 110.1338268285718 0.00018732 deg
peri 142.7037306713445 0.00018838 deg
M 83.90335806146936 1.7381e-05 deg
tp 2457089.457371040885
(2015-Mar-07.95737104)
6.423e-05 JED
period 1334.575266263432
3.65
1.1664e-05
3.193e-08
d
yr
n .26974874261527 2.3575e-09 deg/d
Q 2.78797947951929 1.6244e-08 au
  Orbit Determination Parameters
   # obs. used (total)      686  
   data-arc span      8140 days (22.29 yr)  
   first obs. used      1993-07-12  
   last obs. used      2015-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52844  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Nov-30 16:39:03  

Additional Information
 Earth MOID = .941153 au 
 Jupiter MOID = 2.24823 au 
 T_jup = 3.522 
[ 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 15.7 mag n/a MPO344480  
rotation period rot_per 4.21 h n/a LCDB (Rev. 2015-December); 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]

22501 (1997 PR3)          Discovered 1997-Aug-05 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 PR3 = 1993 OQ11 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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