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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1594967803525537 3.5446e-08  
a 3.151974467989032 1.7254e-08 au
q 2.649244688591328 1.1394e-07 au
i .5969996685781398 4.1899e-06 deg
node 193.9707047649472 0.00034197 deg
peri 117.4794250240392 0.00034219 deg
M 205.48101310462 1.3416e-05 deg
tp 2459877.807444210104
(2022-Oct-25.30744421)
7.8316e-05 TDB
period 2043.960333039698
5.60
1.6783e-05
4.595e-08
d
yr
n .1761286626656898 1.4462e-09 deg/d
Q 3.654704247386736 2.0006e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1845  
   data-arc span      15654 days (42.86 yr)  
   first obs. used      1977-06-12  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48507  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:59:15  

Additional Information
 Earth MOID = 1.63503 au 
 Jupiter MOID = 1.61935 au 
 T_jup = 3.187 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456589.5 (2013-Oct-24.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1536945556678516 3.4513e-08  
q 2.678905692361453 1.0966e-07 au
tp 2455772.496803359179
(2011-Jul-29.99680336)
7.8682e-05 TDB
node 194.8245691583793 0.00034602 deg
peri 115.2255842316747 0.00034625 deg
i .5911382167420942 4.1663e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1845  
   data-arc span      15654 days (42.86 yr)  
   first obs. used      1977-06-12  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48507  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:59:15  

Additional Information
 Jupiter MOID = 1.61935 au 
 T_jup = 3.187 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.191136897799307E-15 -3.749670665247858E-15 7.690879528883634E-13 6.184467739453371E-15 1.047002104954063E-13 2.4721866357025E-16
q -3.749670665247858E-15 1.202635721857496E-14 -2.499823530185919E-12 -2.127669636400183E-14 -3.270448096387801E-13 -8.71994560841759E-16
tp 7.690879528883634E-13 -2.499823530185919E-12 6.190908600601392E-9 1.32060993724672E-11 1.021135079279665E-9 1.448629730179485E-13
node 6.184467739453371E-15 -2.127669636400183E-14 1.32060993724672E-11 1.197272674642202E-7 -1.197187464504168E-7 -1.680198388719259E-10
peri 1.047002104954063E-13 -3.270448096387801E-13 1.021135079279665E-9 -1.197187464504168E-7 1.198909860439974E-7 1.680561456447633E-10
i 2.4721866357025E-16 -8.71994560841759E-16 1.448629730179485E-13 -1.680198388719259E-10 1.680561456447633E-10 1.735824808376876E-11

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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