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 ]  
251653 (1991 TH15)
Classification: Main-belt Asteroid          SPK-ID: 2251653
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .204280067090601 9.7465e-08  
a 2.438022876412137 2.2527e-08 au
q 1.939983399650245 2.2422e-07 au
i 5.677500699623451 5.7523e-06 deg
node 35.17285309002044 4.2245e-05 deg
peri 352.4615650797396 4.395e-05 deg
M 189.828519643256 2.1249e-05 deg
tp 2459657.763276607139
(2022-Mar-19.26327661)
9.0234e-05 TDB
period 1390.449087488312
3.81
1.9271e-05
5.276e-08
d
yr
n .25890915621391 3.5884e-09 deg/d
Q 2.936062353174028 2.7128e-08 au
  Orbit Determination Parameters
   # obs. used (total)      344  
   data-arc span      10430 days (28.56 yr)  
   first obs. used      1991-10-06  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49986  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 13:59:43  

Additional Information
 Earth MOID = .944963 au 
 Jupiter MOID = 2.51289 au 
 T_jup = 3.468 
[ 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 16.7   n/a MPO321283  

251653 (1991 TH15)          Discovered 1991-Oct-06 by Lowe, A. at Palomar
Reference: 20101128/Numbers.arcLast Updated: 2010-12-06

[ show close-approach data ]
Alternate Designations
 1991 TH15 = 2006 QR33 
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-14 04:00 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin