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3387 Greenberg (1981 WE)
Classification: Main-belt Asteroid          SPK-ID: 2003387
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1857972665372802 3.6694e-08  
a 2.601061631821714 1.0067e-08 au
q 2.117791490534242 9.7458e-08 au
i 12.87454017300549 4.5484e-06 deg
node 216.7256121015431 1.8187e-05 deg
peri 115.2573606794542 2.1883e-05 deg
M 24.03369031330297 1.3395e-05 deg
tp 2458498.207839551218
(2019-Jan-14.70783955)
5.6768e-05 TDB
period 1532.231516737915
4.20
8.895e-06
2.435e-08
d
yr
n .2349514391705188 1.3639e-09 deg/d
Q 3.084331773109186 1.1937e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2018  
   data-arc span      17275 days (47.30 yr)  
   first obs. used      1972-07-14  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46219  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:25:38  

Additional Information
 Earth MOID = 1.14469 au 
 Jupiter MOID = 2.45617 au 
 T_jup = 3.355 
[ 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 12.4   n/a MPO452211  
diameter diameter 8.069 km 0.149 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 2.6941 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Carbognani, A. (2011) Minor Planet Bull. 38, 57-63.]
[Ferrero, A. (2011) Minor Planet Bull. 38, 49-50.]
[Warner, B.D (2011) Minor Planet Bull. 38, 25-31.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.359   0.050 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

3387 Greenberg (1981 WE)          Discovered 1981-Nov-20 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1981 WE = 1972 NA = 1976 KN = 1981 UF1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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