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JPL Small-Body Database Browser
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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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1594967796374413 3.5448e-08  
a 3.151974470935449 1.7484e-08 au
q 2.649244693321817 1.14e-07 au
i .5970000596851727 4.2713e-06 deg
node 193.9707296129369 0.00034401 deg
peri 117.4793973865856 0.00034423 deg
M 205.4810148887937 1.3524e-05 deg
tp 2459877.807435310300
(2022-Oct-25.30743531)
7.8777e-05 TDB
period 2043.960335905692
5.60
1.7007e-05
4.656e-08
d
yr
n .1761286624187262 1.4655e-09 deg/d
Q 3.654704248549081 2.0273e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1777  
   data-arc span      15578 days (42.65 yr)  
   first obs. used      1977-06-12  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48556  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:57:05  

Additional Information
 Earth MOID = 1.63503 au 
 Jupiter MOID = 1.61935 au 
 T_jup = 3.187 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456510.5 (2013-Aug-06.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1531802731320188 3.4292e-08  
q 2.680384323754912 1.0862e-07 au
tp 2455770.659690377220
(2011-Jul-28.15969038)
8.0725e-05 TDB
node 194.9682996305771 0.00034773 deg
peri 114.8506511661686 0.00034798 deg
i .5913387487232549 4.2495e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1777  
   data-arc span      15578 days (42.65 yr)  
   first obs. used      1977-06-12  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48556  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:57:05  

Additional Information
 Jupiter MOID = 1.61935 au 
 T_jup = 3.187 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.175962872908952E-15 -3.688601453014065E-15 7.56020244172016E-13 5.94330346389867E-15 1.038092926126519E-13 2.861613386286574E-16
q -3.688601453014065E-15 1.179728795335078E-14 -2.450055359197177E-12 -1.814377207673276E-14 -3.243837437595495E-13 -9.700513885961102E-16
tp 7.56020244172016E-13 -2.450055359197177E-12 6.516591450144585E-9 9.128073526842922E-12 1.087978492283375E-9 2.249194224999771E-13
node 5.94330346389867E-15 -1.814377207673276E-14 9.128073526842922E-12 1.209144436346777E-7 -1.209062713440844E-7 -1.333234464977629E-10
peri 1.038092926126519E-13 -3.243837437595495E-13 1.087978492283375E-9 -1.209062713440844E-7 1.210910585097988E-7 1.33370793281855E-10
i 2.861613386286574E-16 -9.700513885961102E-16 2.249194224999771E-13 -1.333234464977629E-10 1.33370793281855E-10 1.80578561582229E-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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