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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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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09689168658491396 4.6686e-08  
a 2.332915292463304 6.544e-09 au
q 2.106875195116796 1.1031e-07 au
i 3.791079598411801 4.7189e-06 deg
node 208.5433929257353 4.9728e-05 deg
peri 148.2078414051286 5.2529e-05 deg
M 69.20977951790069 1.6354e-05 deg
tp 2458750.285861135286
(2019-Sep-23.78586114)
5.9133e-05 TDB
period 1301.508119499196
3.56
5.4762e-06
1.499e-08
d
yr
n .2766021929532975 1.1638e-09 deg/d
Q 2.558955389809811 7.178e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2271  
   data-arc span      24727 days (67.70 yr)  
   first obs. used      1953-01-09  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47924  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 15:52:15  

Additional Information
 Earth MOID = 1.10383 au 
 Jupiter MOID = 2.81128 au 
 T_jup = 3.560 
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Orbital Elements at Epoch 2456610.5 (2013-Nov-14.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09768416218305025 4.6853e-08  
q 2.10511829248759 1.1089e-07 au
tp 2456147.722491990168
(2012-Aug-08.22249199)
5.9608e-05 TDB
node 208.5833972226038 4.9708e-05 deg
peri 148.248567513969 5.2445e-05 deg
i 3.791101878475685 4.7215e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2271  
   data-arc span      24727 days (67.70 yr)  
   first obs. used      1953-01-09  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47924  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 15:52:15  

Additional Information
 Jupiter MOID = 2.81128 au 
 T_jup = 3.560 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.19523258093204E-15 -5.188594880583143E-15 6.597761722863595E-13 -5.126191627952488E-16 1.528477187121975E-13 -1.618288973239654E-15
q -5.188594880583143E-15 1.229741665925811E-14 -1.618432346075091E-12 7.571487821537405E-16 -3.757428806573232E-13 3.842205172065994E-15
tp 6.597761722863595E-13 -1.618432346075091E-12 3.553069150799654E-9 5.850804054576192E-12 1.003503079354275E-9 -1.901030270847552E-12
node -5.126191627952488E-16 7.571487821537405E-16 5.850804054576192E-12 2.470934517267063E-9 -2.463363926782044E-9 -6.883071736171639E-11
peri 1.528477187121975E-13 -3.757428806573232E-13 1.003503079354275E-9 -2.463363926782044E-9 2.750451886971181E-9 6.818214185008137E-11
i -1.618288973239654E-15 3.842205172065994E-15 -1.901030270847552E-12 -6.883071736171639E-11 6.818214185008137E-11 2.229271324321791E-11

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

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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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