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JPL Small-Body Database Browser
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2168 Swope (1955 RF1)
Classification: Main-belt Asteroid          SPK-ID: 2002168
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.

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1548691784763579 4.5667e-08  
a 2.453485475844094 9.4694e-09 au
q 2.073516195796443 1.146e-07 au
i 4.745499414158612 4.8188e-06 deg
node 314.099142592522 4.565e-05 deg
peri 11.00948453405767 4.7578e-05 deg
M 334.8767722949536 1.7048e-05 deg
tp 2459098.459508578568
6.6774e-05 TDB
period 1403.697944480308
n .2564654321933078 1.4848e-09 deg/d
Q 2.833454755891745 1.0936e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2100  
   data-arc span      23250 days (63.66 yr)  
   first obs. used      1955-09-14  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46429  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:31:13  

Additional Information
 Earth MOID = 1.06166 au 
 Jupiter MOID = 2.48171 au 
 T_jup = 3.473 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.7   n/a MPO473794  
diameter diameter 8.205 km 0.058 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
geometric albedo albedo 0.263   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

2168 Swope (1955 RF1)          Discovered 1955-Sep-14 by Goethe Link Observatory at Brooklyn
Discovered by the Indiana Asteroid Program, Goethe Link Observatory, University of Indiana. This program was conceived and directed by F. K. Edmondson; the plates were blinked and measured astrometrically by B. Potter and, following her retirement, by D. Owings; and the photometry was performed under the direction of T. Gehrels. During the years 1947-1967, in which the plates were exposed, a large number of people participated in various aspects of the program.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1955 RF1 = 1955 SG2 = 1955 TO = 1974 QD = 1974 QK1 = 1978 UZ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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