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4772 Frankdrake (1989 VM)
Classification: Main-belt Asteroid          SPK-ID: 2004772
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 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06921477454735245 1.7427e-08  
a 3.160402977339261 1.5475e-08 au
q 2.941656397783942 5.9811e-08 au
i 11.51529436079441 5.9607e-07 deg
node 209.8749948261825 1.1711e-06 deg
peri 185.2720753179341 1.2098e-05 deg
M 199.5286494286266 1.3672e-05 deg
tp 2460115.259918806157
(2023-Jun-19.75991881)
7.9468e-05 TDB
period 2052.164262328849
5.62
1.5073e-05
4.127e-08
d
yr
n .1754245537788786 1.2885e-09 deg/d
Q 3.379149556894579 1.6546e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2888  
   data-arc span      18106 days (49.57 yr)  
   first obs. used      1971-08-19  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41394  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:45:15  

Additional Information
 Earth MOID = 1.94696 au 
 Jupiter MOID = 2.01879 au 
 T_jup = 3.170 
[ 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 11.98   n/a E2021B10  
diameter diameter 27.570 km 0.268 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 16.0409 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.040   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4772 Frankdrake           Discovered 1989 Nov. 2 by T. Hioki and N. Kawasato at Okutama.
Frank Drake (b. 1930) is an American astronomer at the SETI Institute who pioneered the search for extraterrestrial intelligence and conducted the first SETI Search in 1960. He is best known for writing the Drake Equation, trying to quantify the number of active, communicative ET civilizations in the Milky Way.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2015-01-05Last Updated: 2015-01-07

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Alternate Designations
 1989 VM = 1971 QD1 = 1980 DH = 1986 GL2 
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