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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1548691750169055 4.4585e-08  
a 2.45348547384949 6.6816e-09 au
q 2.073516202598458 1.1178e-07 au
i 4.74549836601483 4.3912e-06 deg
node 314.0990925329897 3.2916e-05 deg
peri 11.00954386670771 3.4239e-05 deg
M 334.8767683513485 8.3936e-06 deg
tp 2459098.459523835862
(2020-Sep-05.95952384)
3.2645e-05 TDB
period 1403.697942768567
3.84
5.734e-06
1.57e-08
d
yr
n .2564654325060549 1.0476e-09 deg/d
Q 2.833454745100522 7.7163e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2670  
   data-arc span      23788 days (65.13 yr)  
   first obs. used      1955-09-14  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4346  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:12:01  

Additional Information
 Earth MOID = 1.06166 au 
 Jupiter MOID = 2.48171 au 
 T_jup = 3.473 
[ 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 12.7   n/a MPO473794  
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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