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4194 Sweitzer (1982 RE)
Classification: Main-belt Asteroid          SPK-ID: 2004194
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04406869795515114 9.9978e-09  
a 2.69704590929952 8.7607e-09 au
q 2.578190607751424 2.6796e-08 au
i 7.529821360599893 6.9977e-07 deg
node 156.0709983530662 5.3614e-06 deg
peri 353.4362294515203 3.3353e-05 deg
M 68.26942486962056 3.0155e-05 deg
tp 2458893.700477779860
(2020-Feb-14.20047778)
0.00013568 TDB
period 1617.822739977393
4.43
7.8827e-06
2.158e-08
d
yr
n .2225212880893432 1.0842e-09 deg/d
Q 2.815901210847617 9.1468e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3239  
   data-arc span      32932 days (90.16 yr)  
   first obs. used      1931-01-16  
   last obs. used      2021-03-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43286  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:03:28  

Additional Information
 Earth MOID = 1.5887 au 
 Jupiter MOID = 2.16267 au 
 T_jup = 3.355 
[ 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 12.31   n/a E2021B10  
diameter diameter 17.019 km 0.304 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 18.757 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:
[Marchini, A.; Bernardi, E.; Saya, L.-F.; Papini, R.; Salvaggio, F. (2020) Minor Planet Bull. 47, 249-252.]
geometric albedo albedo 0.097   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B Cb   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

4194 Sweitzer           Discovered 1982 Sept. 15 by E. Bowell at the Anderson Mesa Station of the Lowell Observatory.
Named in honor of Paul A. Sweitzer (b. 1936) on the occasion of his 60th birthday. Sweitzer served as a reporter on the Arizona Daily Sun during 1958-1994, covering news, sports, the performing arts, religion, education, law enforcement and the courts. During that time he made a special effort to report on events and astronomical discoveries at the Lowell Observatory, and in the course of his work he developed warm relationships with many of Lowell's staff. His love of music, especially opera, has led him to become an unfailing supporter, through reviews and informative articles, of the Flagstaff Symphony Orchestra. Name suggested by A.-M. Malotki, endorsed by W. L. Putnam.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19961026/MPCPages.arcLast Updated: 2003-09-26

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Alternate Designations
 1982 RE = 1931 BH = 1967 ES = 1971 DV1 = 1972 HR1 = 1972 KC = 1989 CK8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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