Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
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 ]

[ hide orbit diagram ]

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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .118448546677035 4.0342e-08  
a 3.179339566728421 1.9341e-08 au
q 2.802751415656646 1.2849e-07 au
i 13.12350789707896 4.1824e-06 deg
node 106.9205766135841 1.8338e-05 deg
peri 114.9377691515101 2.5064e-05 deg
M 250.2353063478852 1.8785e-05 deg
tp 2459631.840962504581
(2022-Feb-21.34096250)
0.00011064 TDB
period 2070.636184910176
5.67
1.8895e-05
5.173e-08
d
yr
n .1738596102123158 1.5865e-09 deg/d
Q 3.555927717800197 2.1632e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2005  
   data-arc span      12158 days (33.29 yr)  
   first obs. used      1987-01-08  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45639  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:17:02  

Additional Information
 Earth MOID = 1.82399 au 
 Jupiter MOID = 1.62524 au 
 T_jup = 3.148 
[ 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

[ hide close-approach data ]
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 14:56 00:03 Jupiter 1.7942690798169 1.79426757995013 1.79427057969856 3.77612421318542 3.64896861358871 2417500.121955176 2.90946954391909 284.237219341369 17.3819601803514 -77.4125023943989 2660146.8189723 T 33 CATAB v2.0f-lin.ifort 2020-May-20 04:17:15 2020-May-20 04:17
1917-Aug-27 04:57 00:03 Jupiter 1.65249268033028 1.65249214335949 1.65249321730126 2.57971109291124 2.3727123860697 2421467.706122561 2.74852883493288 140.132270214846 42.6931078118853 86.8123435104741 963170.737823491 T 33 CATAB v2.0f-lin.ifort 2020-May-20 04:17:15 2020-May-20 04:17
1928-May-10 14:37 00:03 Jupiter 1.69983546972799 1.69983478615154 1.69983615331904 1.49424611667823 1.11183538662845 2425377.108859138 2.72396371292017 577.614016957643 89.5419813755142 75.3205028356416 2173839.92169118 T 33 CATAB v2.0f-lin.ifort 2020-May-20 04:17:15 2020-May-20 04:17
1939-Jan-22 00:51 00:02 Jupiter 1.8369292820416 1.83692849431379 1.83693006977088 3.29338239685404 3.15026219664193 2429285.535238183 1.99610432895193 137.433199992701 22.5025481511197 -86.3301773891975 2204538.53434961 T 33 CATAB v2.0f-lin.ifort 2020-May-20 04:17:15 2020-May-20 04:17
2037-Feb-14 13:31 < 00:01 Jupiter 1.72056078705328 1.72056036610936 1.72056120799739 3.5743985064579 3.43390969526368 2465104.063304306 0.687428018900687 87.0918903735828 16.4504632505484 -84.0640350773607 2963729.88355674 T 33 CATAB v2.0f-lin.ifort 2020-May-20 04:17:15 2020-May-20 04:17
2047-Dec-24 21:57 00:01 Jupiter 1.63242789464526 1.63242736558085 1.63242842370975 2.44758368643584 2.22551571552082 2469069.414870579 1.18828007810839 134.555211489633 35.5691442387391 -80.2267339445936 1907595.30456459 T 33 CATAB v2.0f-lin.ifort 2020-May-20 04:17:15 2020-May-20 04:17
2058-Aug-31 23:09 00:02 Jupiter 1.74201867208732 1.74201797332712 1.74201937085138 1.70155420589933 1.38665995243349 2472972.464730637 1.8532010898934 301.130228543367 36.6987481550561 72.1044972077062 2457582.05206165 T 33 CATAB v2.0f-lin.ifort 2020-May-20 04:17:15 2020-May-20 04:17
2069-May-16 21:07 00:02 Jupiter 1.91021274848947 1.91021197580599 1.91021352117457 3.67239243712426 3.54959581112861 2476883.380152192 1.96792835055791 134.131860767737 22.8135902595439 -83.3485971663037 2595297.2498597 T 33 CATAB v2.0f-lin.ifort 2020-May-20 04:17:15 2020-May-20 04:17
2156-Jul-10 10:02 00:04 Jupiter 1.91256775893244 1.91256528427852 1.91257023361277 4.11572085125779 4.00667122771675 2508713.918048730 3.90049892718972 384.49018407477 16.4036876486625 -72.4193609165338 3341704.28685532 T 33 CATAB v2.0f-lin.ifort 2020-May-20 04:17:15 2020-May-20 04:17
2167-Jun-01 21:31 00:04 Jupiter 1.65055851889991 1.65055739883821 1.65055963899285 3.37685544397306 3.22130503762756 2512692.396193288 4.20442321026066 399.805784299164 17.0637185554984 -84.8753949763119 2319659.30586283 T 33 CATAB v2.0f-lin.ifort 2020-May-20 04:17:15 2020-May-20 04:17
2178-Apr-07 09:47 00:05 Jupiter 1.6385418214647 1.63854063617716 1.63854300676761 2.31268911562874 2.07717534325643 2516654.907351493 5.26723299691918 345.201632828403 64.068346564323 -62.7520035811722 1441773.62243978 T 33 CATAB v2.0f-lin.ifort 2020-May-20 04:17:15 2020-May-20 04:17
2188-Dec-04 00:07 00:06 Jupiter 1.80130077455821 1.8012989163923 1.8013026327791 2.05925131685862 1.8166065838762 2520548.504903425 6.33125836541699 613.520056891295 16.6366255991519 75.8155126637399 2668959.71341426 T 33 CATAB v2.0f-lin.ifort 2020-May-20 04:17:15 2020-May-20 04:17
2199-Aug-26 19:51 00:06 Jupiter 1.99618058017471 1.99617848480406 1.99618267557123 4.15465135091873 4.05123248772422 2524466.327417979 5.78988592552703 390.11563697973 23.3598017443281 -78.7181192706818 3038500.94726985 T 33 CATAB v2.0f-lin.ifort 2020-May-20 04:17:15 2020-May-20 04:17

Alternate Designations
 1997 YP8 = 1987 AV 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-May-30 10:17 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin