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

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.

Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1618519273039092 3.4035e-08  
a 3.146126522674135 1.6313e-08 au
q 2.636919881437381 1.1268e-07 au
i .3173335117084887 3.6237e-06 deg
node 346.5978361789738 0.00067081 deg
peri 296.3254071866972 0.00067094 deg
M 3.70206641803393 1.1391e-05 deg
tp 2459179.539366317485
6.4511e-05 TDB
period 2038.274648166071
n .1766199664622766 1.3737e-09 deg/d
Q 3.65533316391089 1.8953e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1867  
   data-arc span      14783 days (40.47 yr)  
   first obs. used      1980-03-16  
   last obs. used      2020-09-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52329  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 19:48:42  

Additional Information
 Earth MOID = 1.61857 au 
 Jupiter MOID = 1.49642 au 
 T_jup = 3.189 
[ show covariance matrix ]

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 13.51   n/a E2021B10  
diameter diameter 11.067 km 0.129 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 5.231 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.057   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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