Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
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 ]  
15281 (1991 PT16)
Classification: Main-belt Asteroid          SPK-ID: 2015281
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06666753265102286 9.1367e-08  
a 2.909252369106312 3.1953e-08 AU
q 2.715299691798851 2.7177e-07 AU
i 2.401876643816683 1.0176e-05 deg
node 152.359429435958 0.00015624 deg
peri 169.8564056886815 0.00016909 deg
M 229.9942167810835 6.709e-05 deg
tp 2457455.031712286902
(2016-Mar-07.53171229)
0.00034165 JED
period 1812.468727075821
4.96
2.986e-05
8.175e-08
d
yr
n .1986241167210716 3.2723e-09 deg/d
Q 3.103205046413772 3.4083e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      927  
   data-arc span      8281 days (22.67 yr)  
   first obs. used      1991-08-07  
   last obs. used      2014-04-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57437  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:07:11  

Additional Information
 Earth MOID = 1.70162 AU 
 T_jup = 3.279 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.1 mag n/a MPO263484  

15281 (1991 PT16)          Discovered 1991-Aug-07 by Holt, H. E. at Palomar (675)
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 PT16 = 1996 TK61 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Apr-24 12:45 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin