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
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1562653503898316 3.3261e-08  
a 3.098003597185291 1.7657e-08 au
q 2.613892979562173 1.0025e-07 au
i 1.397946198322055 4.3833e-06 deg
node 31.03006118945484 0.00015266 deg
peri 256.3833164839692 0.0001533 deg
M 164.5323510129163 1.4852e-05 deg
tp 2458290.230259389453
(2018-Jun-20.73025939)
8.0173e-05 TDB
period 1991.687984778579
5.45
1.7027e-05
4.662e-08
d
yr
n .1807512033768794 1.5453e-09 deg/d
Q 3.58211421480841 2.0416e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1364  
   data-arc span      10758 days (29.45 yr)  
   first obs. used      1991-08-05  
   last obs. used      2021-01-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53498  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:14:02  

Additional Information
 Earth MOID = 1.59604 au 
 Jupiter MOID = 1.58799 au 
 T_jup = 3.203 
[ 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 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

[ show close-approach data ]
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 2021-Apr-16 12:29 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin