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 ]  
160881 (2001 PJ12)
Classification: Main-belt Asteroid          SPK-ID: 2160881
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1893277406896249 7.1402e-08  
a 3.177390697890332 2.4326e-08 au
q 2.575822495770525 2.2852e-07 au
i 19.11038125518499 8.7533e-06 deg
node 5.527129175114517 1.6171e-05 deg
peri 15.1210100462641 2.2602e-05 deg
M 73.93690155909849 1.7811e-05 deg
tp 2458575.623116747575
(2019-Apr-02.12311675)
9.9607e-05 TDB
period 2068.73259151405
5.66
2.3758e-05
6.505e-08
d
yr
n .1740195912592675 1.9985e-09 deg/d
Q 3.77895890001014 2.8932e-08 au
  Orbit Determination Parameters
   # obs. used (total)      675  
   data-arc span      10701 days (29.30 yr)  
   first obs. used      1990-10-09  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53248  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 13:26:51  

Additional Information
 Earth MOID = 1.58146 au 
 Jupiter MOID = 1.71235 au 
 T_jup = 3.088 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456623.5 (2013-Nov-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1830463171327199 7.0218e-08  
q 2.599824367679811 2.2205e-07 au
tp 2456499.050112178257
(2013-Jul-25.55011218)
9.466e-05 TDB
node 5.740198437224844 1.6238e-05 deg
peri 14.32510723974089 2.317e-05 deg
i 19.04730097406744 8.7351e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      675  
   data-arc span      10701 days (29.30 yr)  
   first obs. used      1990-10-09  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53248  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 13:26:51  

Additional Information
 Jupiter MOID = 1.71235 au 
 T_jup = 3.088 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.930578390210528E-15 -1.552828106367293E-14 -1.888492748473097E-12 7.676178160106467E-15 -4.284786160378866E-13 -5.817139154583966E-15
q -1.552828106367293E-14 4.930473925844961E-14 6.514859504439895E-12 -2.465786310040694E-14 1.443990516905087E-12 2.259403292424603E-14
tp -1.888492748473097E-12 6.514859504439895E-12 8.960514185547501E-9 1.223010537855637E-11 1.581942843994832E-9 -1.536820086948169E-13
node 7.676178160106467E-15 -2.465786310040694E-14 1.223010537855637E-11 2.636783606788999E-10 -2.474255357033278E-10 -2.877266244008748E-11
peri -4.284786160378866E-13 1.443990516905087E-12 1.581942843994832E-9 -2.474255357033278E-10 5.368506578098041E-10 2.710414961342973E-11
i -5.817139154583966E-15 2.259403292424603E-14 -1.536820086948169E-13 -2.877266244008748E-11 2.710414961342973E-11 7.63026161837096E-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 14.4   n/a MPO454066  

160881 (2001 PJ12)          Discovered 2001-Aug-12 by NEAT at Palomar
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-09 15:25 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin