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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 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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456595.5 (2013-Oct-30.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1537403111437084 3.4529e-08  
q 2.67873388632598 1.0974e-07 au
tp 2455772.642460443191
(2011-Jul-30.14246044)
7.8587e-05 TDB
node 194.8110390232233 0.00034588 deg
peri 115.2548365650206 0.00034611 deg
i .5911328528976444 4.1641e-06 deg
  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
 Jupiter MOID = 1.61935 au 
 T_jup = 3.187 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.192227690333137E-15 -3.754217744321842E-15 7.707601745696615E-13 6.195168174706061E-15 1.049066638572267E-13 2.431340048506332E-16
q -3.754217744321842E-15 1.204394498851231E-14 -2.506719479791466E-12 -2.157258348949333E-14 -3.27781971540197E-13 -8.580564559013094E-16
tp 7.707601745696615E-13 -2.506719479791466E-12 6.175883573945989E-9 1.3485337597197E-11 1.017952996874869E-9 1.346705939879921E-13
node 6.195168174706061E-15 -2.157258348949333E-14 1.3485337597197E-11 1.196321898800148E-7 -1.196236509253625E-7 -1.697095642915493E-10
peri 1.049066638572267E-13 -3.27781971540197E-13 1.017952996874869E-9 -1.196236509253625E-7 1.197953037695602E-7 1.697447046474222E-10
i 2.431340048506332E-16 -8.580564559013094E-16 1.346705939879921E-13 -1.697095642915493E-10 1.697447046474222E-10 1.73399358088525E-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. 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:
[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.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
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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