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 ]  
20007 Marybrown (1991 LR)
Classification: Main-belt Asteroid          SPK-ID: 2020007
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2327904673687624 5.9983e-08  
a 2.380243152860902 1.5104e-08 AU
q 1.826145236855116 1.4747e-07 AU
i 14.96332895827836 6.9719e-06 deg
node 116.0567266941402 2.4559e-05 deg
peri 188.9303729282714 2.8561e-05 deg
M 110.6324154479162 1.7615e-05 deg
tp 2456588.297798099241
(2013-Oct-22.79779810)
6.3771e-05 JED
period 1341.313864326988
3.67
1.2767e-05
3.495e-08
d
yr
n .2683935576708827 2.5547e-09 deg/d
Q 2.934341068866688 1.862e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      738  
   data-arc span      8683 days (23.77 yr)  
   first obs. used      1991-06-07  
   last obs. used      2015-03-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .525  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 17:05:14  

Additional Information
 Earth MOID = .813113 AU 
 T_jup = 3.457 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.3 mag n/a MPO333004  

20007 Marybrown           Discovered 1991 June 7 by C. S. Shoemaker and E. M. Shoemaker at Palomar.
Mary J. Brown (b. 1945) assisted in organizing the Palomar Observatory's 1.2-m Schmidt Oschin Telescope plate archive at the California Institute of Technology. This eight-month project was accomplished in 2002 by a dedicated group of eleven volunteers, of which Mary was a valuable member.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030318/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1991 LR = 1998 GJ7 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Aug-05 12:29 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin