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3947 Swedenborg (1983 XD)
Classification: Main-belt Asteroid          SPK-ID: 2003947
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1494238539195255 4.182e-08  
a 3.102148516573854 2.0086e-08 au
q 2.63861352979665 1.3463e-07 au
i 5.382830695689965 4.2225e-06 deg
node 253.947818583344 4.6019e-05 deg
peri 99.82517958967235 4.78e-05 deg
M 309.1054067449119 1.462e-05 deg
tp 2459282.637915249766
(2021-Mar-09.13791525)
8.2314e-05 TDB
period 1995.686437277134
5.46
1.9383e-05
5.307e-08
d
yr
n .1803890597619009 1.752e-09 deg/d
Q 3.565683503351058 2.3088e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1935  
   data-arc span      23327 days (63.87 yr)  
   first obs. used      1955-09-17  
   last obs. used      2019-07-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48363  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:00:07  

Additional Information
 Earth MOID = 1.6406 au 
 Jupiter MOID = 1.93218 au 
 T_jup = 3.198 
[ 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 12.2   n/a MPO473820  
diameter diameter 15.524 km 0.168 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 38.557 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.090   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

3947 Swedenborg (1983 XD)          Discovered 1983-Dec-01 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1983 XD = 1955 SP 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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