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8535 Pellesvanslos (1993 FH22)
Classification: Main-belt Asteroid          SPK-ID: 2008535
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .159496780405005 3.5446e-08  
a 3.151974468081024 1.7245e-08 au
q 2.649244688503323 1.1394e-07 au
i .5969997397563852 4.1877e-06 deg
node 193.9707100071748 0.00034182 deg
peri 117.4794196528557 0.00034204 deg
M 205.4810131858076 1.3412e-05 deg
tp 2459877.807443787556
(2022-Oct-25.30744379)
7.8303e-05 TDB
period 2043.96033312918
5.60
1.6774e-05
4.592e-08
d
yr
n .1761286626579791 1.4454e-09 deg/d
Q 3.654704247658726 1.9995e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1849  
   data-arc span      15702 days (42.99 yr)  
   first obs. used      1977-06-12  
   last obs. used      2020-06-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48533  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:20:08  

Additional Information
 Earth MOID = 1.63503 au 
 Jupiter MOID = 1.61935 au 
 T_jup = 3.187 
[ 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 13.4   n/a MPO319192  
diameter diameter 11.815 km 0.337 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.695 h n/a LCDB (Rev. 2019-August); 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.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.076   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8535 Pellesvanslös           Discovered 1993 Mar. 21 by C.-I. Lagerkvist at the European Southern Observatory.
Named for the fictional character Pelle Svanslös, a brave cat that appears in Gösta Knutsson's children's stories. Some of the adventures of this cat, whose tail was bitten off by a rat when he was only a few days old, take place in the section of Uppsala where the astronomical observatory is located.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990202/MPCPages.arcLast Updated: 2010-06-11

[ show close-approach data ]
Alternate Designations
 1993 FH22 = 1977 LD1 = 1989 SD9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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