Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
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 ]  
11761 Davidgill (4868 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2011761
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .189732893743293 6.6556e-08  
a 3.041913345148007 3.4863e-08 AU
q 2.464762323656736 2.0804e-07 AU
i 1.846652153580799 1.2672e-05 deg
node 20.41009517239113 0.00023747 deg
peri 80.57958033695479 0.00024031 deg
M 359.1354344926354 3.6979e-05 deg
tp 2457005.153868292587
(2014-Dec-13.65386829)
0.00019908 JED
period 1937.843426622979
5.31
3.3314e-05
9.121e-08
d
yr
n .1857735228007358 3.1937e-09 deg/d
Q 3.619064366639279 4.1477e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      460  
   data-arc span      19460 days (53.28 yr)  
   first obs. used      1960-09-24  
   last obs. used      2014-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57679  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 20:11:09  

Additional Information
 Earth MOID = 1.4823 AU 
 T_jup = 3.211 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.7 mag n/a MPO169599  

11761 Davidgill           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
David Gill (1843-1914) was a British astronomer and instrument designer who directed the observatory at the Cape of Good Hope and carried out all the observations to measure distances to the stars in terms of the standard meter.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070926/MPCPages.arcLast Updated: 2007-09-30

[ show close-approach data ]
Alternate Designations
 4868 P-L = 1962 CE1 = 1997 TT11 = 1998 XT48 = 1999 BG21 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Oct-01 05:58 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin