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79231 (1994 PO22)
Classification: Main-belt Asteroid          SPK-ID: 2079231
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1708871423007794 3.2831e-08  
a 2.377556966277114 7.0858e-09 au
q 1.971263050652708 7.7023e-08 au
i 6.669098989075263 3.8526e-06 deg
node 345.8062573790191 2.9401e-05 deg
peri 340.0220363518004 3.1597e-05 deg
M 125.6812734076689 1.188e-05 deg
tp 2458929.020150454475
(2020-Mar-20.52015045)
4.3509e-05 TDB
period 1339.043926540293
3.67
5.9861e-06
1.639e-08
d
yr
n .2688485365301923 1.2019e-09 deg/d
Q 2.783850881901521 8.2967e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2091  
   data-arc span      9729 days (26.64 yr)  
   first obs. used      1994-08-12  
   last obs. used      2021-04-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45678  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:08:08  

Additional Information
 Earth MOID = .960576 au 
 Jupiter MOID = 2.55501 au 
 T_jup = 3.512 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.83   n/a E2021B10  
diameter diameter 2.544 km 0.834 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.61396 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.]
geometric albedo albedo 0.432   0.257 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

79231 (1994 PO22)          Discovered 1994-Aug-12 by Elst, E. W. at La Silla
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

Alternate Designations
 1994 PO22 = 2000 CQ84 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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