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 ]  
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1890498207780068 7.9552e-08  
a 3.176651282670095 2.692e-08 au
q 2.576105927007088 2.585e-07 au
i 19.11177599833965 9.8275e-06 deg
node 5.540666598239372 1.6378e-05 deg
peri 15.11297283883022 2.3845e-05 deg
M 4.33539099983795 1.9898e-05 deg
tp 2458575.595460724936
(2019-Apr-02.09546073)
0.0001141 TDB
period 2068.010506862756
5.66
2.6287e-05
7.197e-08
d
yr
n .1740803534630646 2.2128e-09 deg/d
Q 3.777196638333101 3.2009e-08 au
  Orbit Determination Parameters
   # obs. used (total)      598  
   data-arc span      10613 days (29.06 yr)  
   first obs. used      1990-10-09  
   last obs. used      2019-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55327  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 18:43:17  

Additional Information
 Earth MOID = 1.58095 au 
 Jupiter MOID = 1.71066 au 
 T_jup = 3.088 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456513.5 (2013-Aug-09.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1829552126612772 7.8235e-08  
q 2.599757624644929 2.516e-07 au
tp 2456498.921825731568
(2013-Jul-25.42182573)
0.00010497 TDB
node 5.741998318681566 1.6451e-05 deg
peri 14.29107437406461 2.4417e-05 deg
i 19.04818789887341 9.8075e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      598  
   data-arc span      10613 days (29.06 yr)  
   first obs. used      1990-10-09  
   last obs. used      2019-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55327  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 18:43:17  

Additional Information
 Jupiter MOID = 1.71066 au 
 T_jup = 3.088 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.120718455775462E-15 -1.960958663036746E-14 -3.44459034624946E-12 8.844595453776497E-15 -6.727908015266161E-13 -7.096542654745986E-15
q -1.960958663036746E-14 6.330072453633382E-14 1.186189251724014E-11 -3.133452820078257E-14 2.285889531131916E-12 3.069753043837837E-14
tp -3.44459034624946E-12 1.186189251724014E-11 1.101945332211366E-8 3.297474230208649E-12 1.912508745395221E-9 1.358108121611766E-11
node 8.844595453776497E-15 -3.133452820078257E-14 3.297474230208649E-12 2.706443871924993E-10 -2.554337745861133E-10 -4.044934915272988E-11
peri -6.727908015266161E-13 2.285889531131916E-12 1.912508745395221E-9 -2.554337745861133E-10 5.96172405660319E-10 4.033775541364263E-11
i -7.096542654745986E-15 3.069753043837837E-14 1.358108121611766E-11 -4.044934915272988E-11 4.033775541364263E-11 9.618707634592619E-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 2019-Dec-13 21:29 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin