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

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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09709286330535881 1.6601e-08  
a 2.332981305961093 5.7559e-09 au
q 2.106465470927455 3.9449e-08 au
i 3.791267531087313 5.1691e-07 deg
node 208.5269283691609 8.0321e-06 deg
peri 148.3157138765106 1.0455e-05 deg
M 178.6194302620807 9.4954e-06 deg
tp 2458750.709704977517
(2019-Sep-24.20970498)
3.3907e-05 TDB
period 1301.563362210815
3.56
4.8168e-06
1.319e-08
d
yr
n .2765904530291246 1.0236e-09 deg/d
Q 2.55949714099473 6.3148e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2882  
   data-arc span      24993 days (68.43 yr)  
   first obs. used      1953-01-09  
   last obs. used      2021-06-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45266  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 23:05:06  

Additional Information
 Earth MOID = 1.10261 au 
 Jupiter MOID = 2.80959 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 13.26   n/a MPO614063  
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 ]
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