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2044 Wirt (1950 VE)
Classification: Mars-crossing Asteroid          SPK-ID: 2002044
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .343394698546424 5.7626e-08  
a 2.380923778743113 8.4471e-09 au
q 1.563327175479609 1.3672e-07 au
i 23.96861352186467 1.0003e-05 deg
node 53.64938810788428 1.3315e-05 deg
peri 50.43999117990131 1.9466e-05 deg
M 305.9993990046347 1.346e-05 deg
tp 2457801.785623878308
5.0861e-05 JED
period 1341.88922457382
n .2682784788843766 1.4277e-09 deg/d
Q 3.198520382006617 1.1348e-08 au
  Orbit Determination Parameters
   # obs. used (total)      726  
   data-arc span      23649 days (64.75 yr)  
   first obs. used      1950-11-22  
   last obs. used      2015-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47641  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 17:51:22  

Additional Information
 Earth MOID = .653629 au 
 Jupiter MOID = 2.34203 au 
 T_jup = 3.346 
[ 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 13.1 mag n/a MPO302073  
diameter diameter 6.66 km 0.6 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2
rotation period rot_per 3.6898 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site,]
[Pray, D.; Pravec, P.; Kusnirak, P.; Cooney, W.; et al. (2006) CBET 353.]
[Pravec, P.; Scheirich, P.; Vokrouhlicky, D.; Harris, A.W.; et al. (2012) Icarus 218, 125-143. See also supplemental on-line material.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]
geometric albedo albedo 0.1907   0.038 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2

2044 Wirt           Discovered 1950 Nov. 8 by C. A. Wirtanen at the Lick Observatory.
Named in honor of Carl A. Wirtanen, known for his discovery of several comets and minor planets and for his contribution to the Shane-Wirtanen survey of galaxies. He contributed to astrometric and other programs of the Lick Observatory for 33 years, including the proper-motion program with respect to galaxies. Name proposed by A. R. Klemola.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5688Last Updated: 2006-03-21
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
FirstGov 2016-May-03 12:30 UT
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