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22391 (1994 PE26)
Classification: Main-belt Asteroid          SPK-ID: 2022391
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1491654643422142 3.9959e-08  
a 2.678604273941433 1.2453e-08 au
q 2.279049023629919 1.1213e-07 au
i 12.19792253818737 4.1187e-06 deg
node 340.3645744301258 1.6756e-05 deg
peri 6.647521561941325 2.0413e-05 deg
M 349.1806990495049 1.2351e-05 deg
tp 2459248.623583966131
(2021-Feb-03.12358397)
5.5064e-05 TDB
period 1601.257817587029
4.38
1.1166e-05
3.057e-08
d
yr
n .2248232583448005 1.5678e-09 deg/d
Q 3.078159524252947 1.4311e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1711  
   data-arc span      10553 days (28.89 yr)  
   first obs. used      1992-01-30  
   last obs. used      2020-12-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45677  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:05:21  

Additional Information
 Earth MOID = 1.27045 au 
 Jupiter MOID = 2.33503 au 
 T_jup = 3.329 
[ 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 13.75   n/a E2021B10  
diameter diameter 4.581 km 1.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.87703 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 0.335   0.094 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22391 (1994 PE26)          Discovered 1994-Aug-12 by Elst, E. W. at La Silla
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1994 PE26 = 1999 TF210 = 2001 BR67 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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