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2181 Fogelin (1942 YA)
Classification: Main-belt Asteroid          SPK-ID: 2002181
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1189737399163767 6.3351e-08  
a 2.591668617326295 1.5688e-08 au
q 2.283328109299081 1.6822e-07 au
i 13.00762327828485 8.7925e-06 deg
node 17.28883428836782 2.4023e-05 deg
peri 116.0844328986937 4.4973e-05 deg
M 212.6092383053902 3.4674e-05 deg
tp 2458224.429319177872
0.00014679 JED
period 1523.939169060202
n .2362299016318403 2.145e-09 deg/d
Q 2.900009125353509 1.7555e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1116  
   data-arc span      26771 days (73.30 yr)  
   first obs. used      1942-12-28  
   last obs. used      2016-04-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52433  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:38:05  

Additional Information
 Earth MOID = 1.32688 au 
 Jupiter MOID = 2.17241 au 
 T_jup = 3.373 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.9 mag n/a MPO253376  
rotation period rot_per 14.07 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Published Reference List:
[Durkee, R.I. (2010) Minor Planet Bul. 37, 125-127.]

2181 Fogelin           Discovered 1942 Dec. 28 by K. Reinmuth at Heidelberg.
Named in honor of Eric S. Fogelin, an assistant at the Minor Planet Center during 1979-1980 who has helped extensively in the production of the Minor Planet Circulars and in the preparation of computerized data relevant to the Minor Planet Center. Name proposed by C. M. Bardwell and B. G. Marsden.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5451Last Updated: 2006-03-21

Alternate Designations
 1942 YA = 1952 HC2 = 1975 VF9 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
FirstGov 2016-May-01 19:22 UT
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