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8534 Knutsson (1993 FJ10)
Classification: Main-belt Asteroid          SPK-ID: 2008534
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04133956498611142 2.2577e-08  
a 2.882735618065247 1.0824e-08 au
q 2.763564581644461 6.8839e-08 au
i 2.975688701631765 1.354e-06 deg
node 67.52524677539061 1.95e-05 deg
peri 17.50455018134733 2.1138e-05 deg
M 15.47545445226597 2.2998e-05 deg
tp 2459319.649524554333
(2021-Apr-15.14952455)
0.00011423 TDB
period 1787.745312796884
4.89
1.0069e-05
2.757e-08
d
yr
n .2013709656644485 1.1342e-09 deg/d
Q 3.001906654486034 1.1272e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3067  
   data-arc span      14402 days (39.43 yr)  
   first obs. used      1981-11-25  
   last obs. used      2021-05-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44728  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 15:48:37  

Additional Information
 Earth MOID = 1.77974 au 
 Jupiter MOID = 2.08366 au 
 T_jup = 3.290 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457211.5 (2015-Jul-08.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03912959047250313 2.2238e-08  
q 2.770164531777001 6.7625e-08 au
tp 2457513.935449704913
(2016-May-05.43544970)
0.00012373 TDB
node 67.55209652872801 1.9502e-05 deg
peri 13.98244929759549 2.266e-05 deg
i 2.97651611986049 1.3543e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3067  
   data-arc span      14402 days (39.43 yr)  
   first obs. used      1981-11-25  
   last obs. used      2021-05-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44728  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 15:48:37  

Additional Information
 Jupiter MOID = 2.08366 au 
 T_jup = 3.290 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.94536061274324E-16 -1.487289965498113E-15 3.178072458143586E-14 -6.330524453858329E-14 1.060837890414737E-13 5.928695575280347E-15
q -1.487289965498113E-15 4.573194781461555E-15 -2.928702981213738E-13 1.903000433455105E-13 -3.634365800257378E-13 -1.783782501278533E-14
tp 3.178072458143586E-14 -2.928702981213738E-13 1.530867864647507E-8 1.340212669338937E-9 1.88981592065653E-9 -1.182007028003679E-10
node -6.330524453858329E-14 1.903000433455105E-13 1.340212669338937E-9 3.803377379004362E-10 -1.044536852424561E-10 -1.283562515357137E-11
peri 1.060837890414737E-13 -3.634365800257378E-13 1.88981592065653E-9 -1.044536852424561E-10 5.134705523282045E-10 -1.188598690215934E-11
i 5.928695575280347E-15 -1.783782501278533E-14 -1.182007028003679E-10 -1.283562515357137E-11 -1.188598690215934E-11 1.834260191791691E-12

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.03   n/a E2021B10  
diameter diameter 7.284 km 0.221 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.253   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8534 Knutsson           Discovered 1993 Mar. 17 by C.-I. Lagerkvist at the European Southern Observatory.
Named in memory of Gösta Knutsson (1908-1973), Swedish author and radio producer who introduced quiz programs to Sweden. His children's stories about the cat Pelle Svanslös and his adventures in Uppsala have been very popular. The author of twelve books, the first in 1939, Knutsson lived not far from the locations where many of the adventures take place.
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

Alternate Designations
 1993 FJ10 = 1981 WT8 = 1985 QS5 = 1985 SG1 = 1988 EQ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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