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JPL Small-Body Database Browser
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2291 Kevo (1941 FS)
Classification: Main-belt Asteroid          SPK-ID: 2002291
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06497340408737362 3.506e-08  
a 3.042930595536908 1.6761e-08 au
q 2.845221036343256 1.0937e-07 au
i 24.49544352078193 4.5477e-06 deg
node 169.4814696947428 9.2637e-06 deg
peri 296.28749499 3.5766e-05 deg
M 50.0295154932356 3.449e-05 deg
tp 2458731.061102065114
(2019-Sep-04.56110207)
0.00018565 TDB
period 1938.815563178378
5.31
1.6019e-05
4.386e-08
d
yr
n .1856803745735554 1.5341e-09 deg/d
Q 3.24064015473056 1.785e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2410  
   data-arc span      40464 days (110.78 yr)  
   first obs. used      1909-04-22  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41851  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:17:30  

Additional Information
 Earth MOID = 1.91906 au 
 Jupiter MOID = 1.85484 au 
 T_jup = 3.099 
[ 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 10.8   n/a MPO324326  
diameter diameter 41.429 km 0.114 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 9.63 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.049   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2291 Kevo (1941 FS)          Discovered 1941-Mar-19 by Oterma, L. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1941 FS = 1938 RC = 1967 EO = 1970 TD = 1975 RT1 = 1978 GT2 = 1980 PE = A909 HC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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