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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 | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09689168284490428 4.6794e-08  
a 2.332915292872981 6.5583e-09 au
q 2.106875204211906 1.1058e-07 au
i 3.791079809713608 4.7283e-06 deg
node 208.5433913014816 4.9824e-05 deg
peri 148.2078426797948 5.2624e-05 deg
M 69.20977959816453 1.6365e-05 deg
tp 2458750.285860779199
(2019-Sep-23.78586078)
5.9176e-05 TDB
period 1301.508119842028
3.56
5.4882e-06
1.503e-08
d
yr
n .2766021928804374 1.1664e-09 deg/d
Q 2.558955381534057 7.1938e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2237  
   data-arc span      24496 days (67.07 yr)  
   first obs. used      1953-01-09  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48111  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:09:29  

Additional Information
 Earth MOID = 1.10383 au 
 Jupiter MOID = 2.81128 au 
 T_jup = 3.560 
[ 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 13.2   n/a MPO502194  
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. 2019-August); 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

[ show close-approach data ]
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 | Close-Approach Data ]
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