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6260 Kelsey (1949 PN)
Classification: Main-belt Asteroid          SPK-ID: 2006260
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1717677086403323 1.0673e-08  
a 2.67763872320217 8.6793e-09 au
q 2.217706855151108 2.8052e-08 au
i 11.93747633534056 5.1199e-07 deg
node 325.5417982457021 3.9703e-06 deg
peri 7.280828491672752 8.7387e-06 deg
M 99.30702334835891 5.4746e-06 deg
tp 2458759.027291911054
(2019-Oct-02.52729191)
2.3735e-05 TDB
period 1600.392092657029
4.38
7.7812e-06
2.13e-08
d
yr
n .2249448754788053 1.0937e-09 deg/d
Q 3.137570591253231 1.017e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3002  
   data-arc span      26157 days (71.61 yr)  
   first obs. used      1949-08-02  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42609  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 18:30:23  

Additional Information
 Earth MOID = 1.20568 au 
 Jupiter MOID = 2.22848 au 
 T_jup = 3.326 
[ 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 12.19   n/a E2021B10  
diameter diameter 11.196 km 0.078 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.11 h n/a LCDB (Rev. 2020-October); 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:
[Angeli, C.A.; Guimaraes, T.A.; Lazzaro, D.; Duffard, R.; et al. (2001) Astron. J. 121, 2245-2252.]
geometric albedo albedo 0.140   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6260 Kelsey (1949 PN)          Discovered 1949-Aug-02 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1949 PN = 1949 QR = 1991 CF1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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