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 ]  
13965 (1991 PL8)
Classification: Main-belt Asteroid          SPK-ID: 2013965
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1564205185697388 3.3264e-08  
a 3.097335433780922 1.785e-08 au
q 2.612848619044484 1.0022e-07 au
i 1.39807686554706 4.5621e-06 deg
node 31.03679234639917 0.00015423 deg
peri 256.304602488786 0.00015491 deg
M 128.4609645891225 1.5051e-05 deg
tp 2458290.023911260089
(2018-Jun-20.52391126)
8.1977e-05 TDB
period 1991.043682136773
5.45
1.7212e-05
4.712e-08
d
yr
n .180809694548565 1.563e-09 deg/d
Q 3.581822248517362 2.0642e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1296  
   data-arc span      10401 days (28.48 yr)  
   first obs. used      1991-08-05  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54263  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:48:30  

Additional Information
 Earth MOID = 1.59693 au 
 Jupiter MOID = 1.58878 au 
 T_jup = 3.204 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456888.5 (2014-Aug-19.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1601203448324713 3.312e-08  
q 2.597575796800598 1.0009e-07 au
tp 2456302.472857758014
(2013-Jan-09.97285776)
7.9076e-05 TDB
node 31.01145209439207 0.00015399 deg
peri 256.5674643472565 0.00015465 deg
i 1.402268269014628 4.5622e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1296  
   data-arc span      10401 days (28.48 yr)  
   first obs. used      1991-08-05  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54263  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:48:30  

Additional Information
 Jupiter MOID = 1.58878 au 
 T_jup = 3.204 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.096901548844035E-15 -3.280138167599175E-15 7.926074934139969E-14 2.960465092785073E-15 8.375336717734668E-15 -7.701916801580027E-17
q -3.280138167599175E-15 1.001770735763669E-14 -3.263556153946007E-13 -9.423182598240713E-15 -2.892129219631626E-14 2.813887527697713E-16
tp 7.926074934139969E-14 -3.263556153946007E-13 6.252987371587345E-9 -3.437972379137223E-12 1.141781673762516E-9 -2.365744883439623E-13
node 2.960465092785073E-15 -9.423182598240713E-15 -3.437972379137223E-12 2.37122823238412E-8 -2.37054651536939E-8 -7.951604902266785E-11
peri 8.375336717734668E-15 -2.892129219631626E-14 1.141781673762516E-9 -2.37054651536939E-8 2.391531725504905E-8 7.945845037758766E-11
i -7.701916801580027E-17 2.813887527697713E-16 -2.365744883439623E-13 -7.951604902266785E-11 7.945845037758766E-11 2.081335187753331E-11

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 14.1   n/a MPO378710  
diameter diameter 7.835 km 0.492 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.087   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13965 (1991 PL8)          Discovered 1991-Aug-05 by Holt, H. E. at Palomar
Reference: 20000320/Numbers.arcLast Updated: 2004-04-19

[ 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-Feb-03 03:39 00:03 Jupiter 1.61204961501481 1.61204900556528 1.61205022446332 1.65342881522926 1.29729054937531 2417244.652172379 3.11749654305006 118.479004342228 60.6375500795557 22.2434381532677 1316081.89888299 T 29 CATAB v2.0f-lin.ifort 2020-Feb-22 20:48:47 2020-Feb-22 20:48
1966-Sep-26 02:00 00:01 Jupiter 1.65404318521831 1.65404256470318 1.65404380573261 1.54513021399865 1.16758001716047 2439394.583166456 1.35097396257002 89.8565375857513 68.2497423068264 -27.8888948978277 1783686.07839867 T 29 CATAB v2.0f-lin.ifort 2020-Feb-22 20:48:47 2020-Feb-22 20:48
1976-Aug-01 05:37 00:01 Jupiter 1.73968564306819 1.73968509668466 1.73968618945181 2.33485841366959 2.11608099752552 2442991.734225093 1.06878356366159 58.4850824037025 4.25249235843005 -88.1910202663686 2360983.14760198 T 29 CATAB v2.0f-lin.ifort 2020-Feb-22 20:48:47 2020-Feb-22 20:48
2027-May-10 12:03 < 00:01 Jupiter 1.95206992165644 1.95206949191976 1.95207035139307 2.46920328209233 2.28673238393248 2461536.002329489 0.431124413598553 48.507858052629 9.12550155058926 -89.298908173335 2987882.18791862 T 29 CATAB v2.0f-lin.ifort 2020-Feb-22 20:48:47 2020-Feb-22 20:48
2037-Mar-28 16:41 < 00:01 Jupiter 1.59406075718642 1.59406040960026 1.59406110477212 1.4599297494565 1.03376586922293 2465146.194800347 0.726333175521773 120.048137330441 76.5570001213683 -20.8850512745988 2287351.47719442 T 29 CATAB v2.0f-lin.ifort 2020-Feb-22 20:48:47 2020-Feb-22 20:48
2047-Feb-04 14:49 < 00:01 Jupiter 1.92315848740815 1.92315780852327 1.92315916629324 3.35207676471168 3.21800444074411 2468746.117617871 0.963378705038824 56.7597287275689 16.2604605295396 -70.6826881797429 2722304.07838219 T 29 CATAB v2.0f-lin.ifort 2020-Feb-22 20:48:47 2020-Feb-22 20:48
2097-Nov-16 05:05 00:02 Jupiter 1.76312969893706 1.76312868838744 1.76313070948588 1.83379013762651 1.54982877895759 2487293.712010996 2.42765597723489 75.0858609883328 27.487269159058 83.4984697936683 1455811.16924102 T 29 CATAB v2.0f-lin.ifort 2020-Feb-22 20:48:47 2020-Feb-22 20:48
2107-Sep-27 09:48 00:03 Jupiter 1.64963895477462 1.64963800697324 1.64963990257449 1.8134345578022 1.50387041708102 2490894.908606198 2.79254469449141 95.9600133688323 44.6833101168706 40.5743305476149 1187140.71855494 T 29 CATAB v2.0f-lin.ifort 2020-Feb-22 20:48:47 2020-Feb-22 20:48
2168-May-19 00:33 00:04 Jupiter 1.63229597949889 1.63229510224405 1.63229685675337 1.48642354358346 1.08241645529552 2513044.522862074 4.4591686599083 133.582639757242 99.4383373287191 61.3882296938709 1752030.52320725 T 29 CATAB v2.0f-lin.ifort 2020-Feb-22 20:48:47 2020-Feb-22 20:48
2178-Mar-26 21:12 00:05 Jupiter 1.79535963318062 1.7953574360305 1.795361830334 2.60217678286789 2.41407443507487 2516643.383021411 4.75492059436001 185.349464308763 7.95597331570884 -79.3721413576697 2012009.12688729 T 29 CATAB v2.0f-lin.ifort 2020-Feb-22 20:48:47 2020-Feb-22 20:48

Alternate Designations
 1991 PL8 = 1991 RZ38 = 1995 DN8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Apr-05 14:30 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin