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7548 Engstrom (1980 FW2)
Classification: Main-belt Asteroid          SPK-ID: 2007548
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1599426983676754 4.9661e-08  
a 3.145832351559538 2.6393e-08 au
q 2.642679436638776 1.5958e-07 au
i .317201034159805 6.0336e-06 deg
node 346.7301604849278 0.0008781 deg
peri 296.2804362237674 0.00087821 deg
M 80.77703595749783 1.7648e-05 deg
tp 2457143.214742043490
0.0001006 JED
period 2037.988778778197
n .1766447410057994 2.223e-09 deg/d
Q 3.6489852664803 3.0614e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1200  
   data-arc span      13048 days (35.72 yr)  
   first obs. used      1980-03-16  
   last obs. used      2015-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53893  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:04:04  

Additional Information
 Earth MOID = 1.626 au 
 Jupiter MOID = 1.49583 au 
 T_jup = 3.189 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.5 mag n/a MPO350863  
rotation period rot_per 5.2309 h n/a LCDB (Rev. 2016-February); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

7548 Engström           Discovered 1980 Mar. 16 by C.-I. Lagerkvist at the European Southern Observatory.
Named in memory of Albert Engström (1869-1940), Swedish artist and writer. Born in Lönneberga in the Swedish province of Småland, he went as a student to Uppsala in 1889, where he studied Greek and Latin before his artistic ambitions made him move to an art school in Gothenburg. Probably Sweden's best painter of caricatures, he is best known for his black and white drawings illustrating very short stories. He was also an outstanding writer, specializing in short stories. Appointed professor of drawing at the Swedish academy of art, in 1922 he became a member of the prestigious Swedish academy.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19980411/MPCPages.arcLast Updated: 2009-11-17

[ show close-approach data ]
Alternate Designations
 1980 FW2 = 1993 QA4 = 1999 TS324 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2016-Apr-30 01:28 UT
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