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1449 Virtanen (1938 DO)
Classification: Main-belt Asteroid          SPK-ID: 2001449
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1414398610382968 3.2064e-08  
a 2.222800327062016 4.5797e-09 au
q 1.908407757686484 7.132e-08 au
i 6.642108702626176 3.3548e-06 deg
node 110.7587336063175 2.9221e-05 deg
peri 132.1327409369196 3.1351e-05 deg
M 286.0247348221671 1.2358e-05 deg
tp 2459449.232843526033
4.1807e-05 TDB
period 1210.45627148633
n .297408513203003 9.1913e-10 deg/d
Q 2.537192896437549 5.2274e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3057  
   data-arc span      33997 days (93.08 yr)  
   first obs. used      1928-02-24  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41764  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 19:29:53  

Additional Information
 Earth MOID = .900794 au 
 Jupiter MOID = 2.4896 au 
 T_jup = 3.626 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.11   n/a E2021B10  
diameter diameter 9.263 km 0.098 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 30.495 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2007) Observatoire de Geneve web site,]
[Oey, J. (2009) Minor Planet Bull. 36, 162-165.]
[Behrend, R. (2011) Observatoire de Geneve web site,]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.285   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a medium resolution spectrum published by Chapman and Gaffey (1979)

1449 Virtanen (1938 DO)          Discovered 1938-Feb-20 by Vaisala, Y. at Turku
In 1966 C. Bardwell, Cincinnati, discovered that minor planet 1928 DC, discovered 1928 Feb. 24 by K. Reinmuth and originally designated 1095 Tulipa, is identical with planet 1449 Virtanen, discovered by Y. Vaisala, Turku, 1938 Feb. 20. This planet retains the latter designation 1449 Virtanen. The designation 1095 Tulipa has been reassigned to planet 1926 GS, discovered 1926 Apr. 14 by K. Reinmuth and newly catalogued.
Note: "planet" implies "minor planet"
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1938 DO = 1928 DC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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