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 ]  
10870 Gwendolen (1996 SY4)
Classification: Main-belt Asteroid          SPK-ID: 2010870
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2048168073313292 3.5361e-08  
a 2.399929620360891 1.013e-08 au
q 1.908383697698685 8.603e-08 au
i 2.976987696489869 4.6764e-06 deg
node 69.44495089175973 7.7926e-05 deg
peri 276.9540937932707 7.8865e-05 deg
M 197.7163814443173 1.3968e-05 deg
tp 2459812.664820021732
(2022-Aug-21.16482002)
5.4496e-05 TDB
period 1357.988792517632
3.72
8.5979e-06
2.354e-08
d
yr
n .2650979168484749 1.6784e-09 deg/d
Q 2.891475543023098 1.2205e-08 au
  Orbit Determination Parameters
   # obs. used (total)      977  
   data-arc span      14440 days (39.53 yr)  
   first obs. used      1981-09-01  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54538  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 22:23:39  

Additional Information
 Earth MOID = .902425 au 
 Jupiter MOID = 2.52889 au 
 T_jup = 3.496 
[ 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 15.38   n/a E2021B10  

10870 Gwendolen           Discovered 1996 Sept. 25 by G. C. L. Aikman at the Dominion Astrophysical Observatory, Victoria.
Mary Gwendolen Ellery Read Aikman (1903-1994) was an inspiring educator and mother of the discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010109/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 1996 SY4 = 1981 RL6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-23 08:09 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin