Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1859820281575784 3.0562e-08  
a 2.601743571784005 8.7441e-09 au
q 2.117866025557674 7.9136e-08 au
i 12.87255916677824 4.1927e-06 deg
node 216.7198646419005 1.6126e-05 deg
peri 115.328610926098 2.0081e-05 deg
M 117.9116487386388 1.3261e-05 deg
tp 2458498.447223158934
(2019-Jan-14.94722316)
5.5485e-05 TDB
period 1532.834131285935
4.20
7.7274e-06
2.116e-08
d
yr
n .2348590709537414 1.184e-09 deg/d
Q 3.085621118010337 1.037e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2331  
   data-arc span      17640 days (48.30 yr)  
   first obs. used      1972-07-14  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4429  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:00:44  

Additional Information
 Earth MOID = 1.14559 au 
 Jupiter MOID = 2.45787 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-August); 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2160-Feb-29 12:49 < 00:01 Thisb 0.0180591835804882 0.0180523820301337 0.0180659995359028 3.23105668388754 3.23105656703663 2510043.034337053 0.821718281922732 876.584916243224 36.3967240542153 -67.3496319846054 68451.3792467832 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 04:00:50 2020-Nov-13 04:00
2183-Jul-22 02:36 < 00:01 David 0.0362702327699473 0.036258272135137 0.0362822040577609 8.99597092339875 8.99597087709836 2518586.608106675 0.711315366933954 1149.18629648053 39.5002588727958 58.78072491259 117474.328942536 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 04:00:50 2020-Nov-13 04:00

Alternate Designations
 1981 WE = 1972 NA = 1976 KN = 1981 UF1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Dec-01 09:42 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin