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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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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1181425029192776 2.3525e-08  
a 3.178876827480442 1.5647e-08 au
q 2.80331636260981 7.622e-08 au
i 13.12250342215628 4.6462e-07 deg
node 106.9176644631763 2.3551e-06 deg
peri 114.9771972941304 8.1196e-06 deg
M 319.0203037818015 5.7286e-06 deg
tp 2459632.154214713684
(2022-Feb-21.65421471)
3.3291e-05 TDB
period 2070.184143025738
5.67
1.5285e-05
4.185e-08
d
yr
n .1738975739007601 1.284e-09 deg/d
Q 3.554437292351074 1.7496e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2543  
   data-arc span      12600 days (34.50 yr)  
   first obs. used      1987-01-08  
   last obs. used      2021-07-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43541  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:05:19  

Additional Information
 Earth MOID = 1.82492 au 
 Jupiter MOID = 1.62427 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 12.44   n/a MPCxxxxx  
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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1906-Oct-16 14:55 00:02 Jupiter 1.79426860925057 1.79426745360903 1.79426976490262 3.77612315991122 3.64896749039678 2417500.121378425 2.44918572801759 230.181097820798 6.12658185848125 -77.7435866988902 12838693.4638108 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 14:06:37 2021-Aug-25 14:06
1917-Aug-27 04:56 00:02 Jupiter 1.65249285328842 1.65249258567435 1.65249312090325 2.57970944138144 2.37271061426206 2421467.705643867 2.32218799831912 76.3179354449194 22.5766770250823 72.1344978940028 2707447.77978156 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 14:06:37 2021-Aug-25 14:06
1928-May-10 14:36 00:02 Jupiter 1.69983590726421 1.69983553575858 1.69983627879961 1.49424728089913 1.11183706911286 2425377.108376843 2.30701636381932 466.071900289406 43.0391725927628 75.3491211351673 4926462.49946102 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 14:06:37 2021-Aug-25 14:06
1939-Jan-22 00:50 00:02 Jupiter 1.83692959528089 1.83692910428828 1.8369300862759 3.29338598951632 3.15026597829126 2429285.534943323 1.69583686397295 111.257934439828 3.81386791600719 -85.6729631232498 15196579.2427166 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 14:06:37 2021-Aug-25 14:06
2037-Feb-14 13:31 < 00:01 Jupiter 1.72056082525653 1.72056049741858 1.72056115309506 3.57439944715324 3.43391067842013 2465104.063356750 0.522249513947067 60.1094995946898 6.50465213416918 -78.4394244854827 13890038.4601435 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 14:06:37 2021-Aug-25 14:06
2047-Dec-24 21:57 < 00:01 Jupiter 1.63242817184289 1.63242794537079 1.63242839831536 2.44758370567152 2.22551577755388 2469069.414871867 0.92166648730708 50.3098148722614 21.994154981239 -86.3014016585986 3365705.39041976 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 14:06:37 2021-Aug-25 14:06
2058-Aug-31 23:09 00:01 Jupiter 1.74201899745744 1.74201862311749 1.74201937180491 1.70155505196402 1.38666105805979 2472972.464623760 1.47081923111999 224.831131220814 15.334014777598 73.1237039073396 7258974.23482419 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 14:06:37 2021-Aug-25 14:06
2069-May-16 21:07 00:02 Jupiter 1.91021289890422 1.91021230460458 1.91021349320591 3.67239483934188 3.54959830697642 2476883.380092257 1.58308177115926 107.504466991359 5.00883773909186 -80.1330946364436 14840094.0455267 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 14:06:37 2021-Aug-25 14:06
2156-Jul-10 10:02 00:03 Jupiter 1.9125678340644 1.91256572214158 1.91256994600537 4.11572236768393 4.00667279036822 2508713.918287643 3.20884542343639 317.125837625944 6.4517671678778 -71.7002798128791 11042645.0998997 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 14:06:37 2021-Aug-25 14:06
2167-Jun-01 21:31 00:03 Jupiter 1.65055867162047 1.65055769420786 1.65055964905758 3.3768568279905 3.22130650409651 2512692.396459332 3.45627106829206 333.994548003 8.01741789515975 -84.3030349216576 14708582.1411915 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 14:06:37 2021-Aug-25 14:06
2178-Apr-07 09:47 00:04 Jupiter 1.63854207457992 1.63854121411939 1.63854293505172 2.31268947522185 2.07717578343931 2516654.907580895 4.32486000582192 250.488650463574 27.0166732420986 -57.9865085095911 2285891.21020946 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 14:06:37 2021-Aug-25 14:06
2188-Dec-04 00:07 00:05 Jupiter 1.80130097024937 1.80129946363703 1.80130247690348 2.05925163549474 1.81660697462373 2520548.505041475 5.20896030370373 505.638011910747 4.47878896083901 75.987563585944 11491453.5454032 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 14:06:37 2021-Aug-25 14:06
2199-Aug-26 19:52 00:05 Jupiter 1.99618059769935 1.99617881558094 1.99618237983649 4.15465263813688 4.05123380930027 2524466.327559215 4.76752421488798 322.653503410461 6.86461689866578 -77.9316996595196 12599404.2007457 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 14:06:37 2021-Aug-25 14:06

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