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4914 Pardina (1969 GD)
Classification: Main-belt Asteroid          SPK-ID: 2004914
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1583899900073146 2.796e-08  
a 2.625141258110154 1.1026e-08 au
q 2.209345160470298 7.0904e-08 au
i 12.53202083031086 8.2802e-07 deg
node 255.3281224674445 3.9732e-06 deg
peri 151.75324034 5.4469e-06 deg
M 196.9301170766297 8.7799e-06 deg
tp 2459904.218068398951
4.1188e-05 TDB
period 1553.557898503374
n .2317261560362876 1.4599e-09 deg/d
Q 3.040937355750011 1.2772e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2400  
   data-arc span      18939 days (51.85 yr)  
   first obs. used      1969-04-09  
   last obs. used      2021-02-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39442  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:56:01  

Additional Information
 Earth MOID = 1.22748 au 
 Jupiter MOID = 2.33865 au 
 T_jup = 3.351 
[ 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 11.73   n/a MPCxxxxx  
diameter diameter 10.900 km 0.513 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 4.142 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2001) Observatoire de Geneve web site,]
[LeCrone, C.; Duncan, A.; Hudson, E.; Johnson, J.; et al. (2006) Minor Planet Bull. 33, 66-67.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.373   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

4914 Pardina           Discovered 1969 Apr. 9 at the Felix Aguilar Observatory, El Leoncito.
Named in honor of Elsa Gutierrez Rodriguez-Pardina (b. 1921), Argentinian astronomer who has worked in the field of celestial mechanics for more than 30 years. From 1952 to 1956, she worked at the La Plata Observatory in the Department of Astrometry and Celestial Mechanics. In 1954 she obtained a scholarship from the French government to further her studies in celestial mechanics at the Sorbonne Henri Poincare Institute. From 1978 to 1986, Pardina led the Celestial Mechanics Department of the Astronomical Observatory of Cordoba. For many years, she was responsible for the celestial mechanics courses taught to undergraduate students.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990202/MPCPages.arcLast Updated: 2010-06-11

Alternate Designations
 1969 GD = 1988 XF2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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