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 ]  
4300 Marg Edmondson (1955 SG1)
Classification: Main-belt Asteroid          SPK-ID: 2004300
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09697169215739612 1.6761e-08  
a 2.333165536374704 5.7792e-09 au
q 2.10691452622913 3.9892e-08 au
i 3.79090483875026 5.1722e-07 deg
node 208.5351317436732 8.048e-06 deg
peri 148.28226148939 1.0526e-05 deg
M 124.4474143480018 9.5219e-06 deg
tp 2458750.512828408456
(2019-Sep-24.01282841)
3.4172e-05 TDB
period 1301.71753765776
3.56
4.8365e-06
1.324e-08
d
yr
n .276557693651239 1.0275e-09 deg/d
Q 2.559416546520278 6.3396e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2732  
   data-arc span      24910 days (68.20 yr)  
   first obs. used      1953-01-09  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45349  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:32:39  

Additional Information
 Earth MOID = 1.10219 au 
 Jupiter MOID = 2.81038 au 
 T_jup = 3.560 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.25   n/a MPCxxxxx  
diameter diameter 3.971 km 0.246 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.328 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Klinglesmith III, D.A.; Hanowell, J.; Risley, E.; Turk, J.; et al. (2013) Minor Planet Bull. 40, 65-67.]
geometric albedo albedo 0.588   0.148 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4300 Marg Edmondson (1955 SG1)          Discovered 1955-Sep-18 by Indiana University at Brooklyn
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1955 SG1 = 1955 UP = 1955 VG1 = 1969 QW = 1985 AG = 1986 HH = 1986 LR1 = 1987 SP6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-13 15:53 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin