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JPL Small-Body Database Browser
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15939 Fessenden (1997 YP8)
Classification: Main-belt Asteroid          SPK-ID: 2015939
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .118781766129152 4.1199e-08  
a 3.178722778868755 1.9982e-08 au
q 2.801148473159758 1.303e-07 au
i 13.12268489604666 4.2657e-06 deg
node 106.9238135674647 1.9981e-05 deg
peri 114.885836406087 2.6829e-05 deg
M 180.7623774373466 1.8924e-05 deg
tp 2459631.133089910981
(2022-Feb-20.63308991)
0.00011231 TDB
period 2070.033662928432
5.67
1.9518e-05
5.344e-08
d
yr
n .1739102153009028 1.6398e-09 deg/d
Q 3.556297084577751 2.2355e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1838  
   data-arc span      12021 days (32.91 yr)  
   first obs. used      1987-01-08  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46927  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:05:32  

Additional Information
 Earth MOID = 1.82245 au 
 Jupiter MOID = 1.62502 au 
 T_jup = 3.149 
[ 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 12.4   n/a MPO452396  
diameter diameter 12.084 km 0.237 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.159   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15939 Fessenden           Discovered 1997 Dec. 28 by Spacewatch at Kitt Peak.
Reginald Aubrey Fessenden (1866-1932) invented amplitude modulation as a means of transmitting sounds by radio. He was a professor at Purdue University and the University of Pittsburgh. The name was suggested by K. Ellis.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050523/MPCPages.arcLast Updated: 2005-07-21

[ show close-approach data ]
Alternate Designations
 1997 YP8 = 1987 AV 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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