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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1544927652542113 2.1044e-08  
a 2.452435355618588 5.8727e-09 au
q 2.073551835921878 5.2397e-08 au
i 4.746000628920953 5.1e-07 deg
node 314.098768457918 1.1059e-05 deg
peri 10.96269232893109 1.2851e-05 deg
M 26.2206448824797 4.2288e-06 deg
tp 2459098.327117089994
(2020-Sep-05.82711709)
1.6409e-05 TDB
period 1402.796842429289
3.84
5.0388e-06
1.38e-08
d
yr
n .2566301755973239 9.2181e-10 deg/d
Q 2.831318875315299 6.78e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2934  
   data-arc span      23893 days (65.42 yr)  
   first obs. used      1955-09-14  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42384  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:25:40  

Additional Information
 Earth MOID = 1.05973 au 
 Jupiter MOID = 2.48316 au 
 T_jup = 3.474 
[ 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 12.76   n/a E2021B10  
diameter diameter 8.205 km 0.058 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.263   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

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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