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 ]  
15217 (1981 ET19)
Classification: Main-belt Asteroid          SPK-ID: 2015217
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1396940577025443 4.7543e-08  
a 2.409654247417899 1.2462e-08 au
q 2.073039867935922 1.132e-07 au
i 1.914785269991296 4.4423e-06 deg
node 135.6219116925422 0.00016665 deg
peri 115.0260373764046 0.0001676 deg
M 112.9431610801197 1.7717e-05 deg
tp 2458571.864672244002
(2019-Mar-29.36467224)
6.6739e-05 TDB
period 1366.251099371086
3.74
1.0598e-05
2.902e-08
d
yr
n .2634947559535107 2.044e-09 deg/d
Q 2.746268626899876 1.4202e-08 au
  Orbit Determination Parameters
   # obs. used (total)      513  
   data-arc span      15875 days (43.46 yr)  
   first obs. used      1977-02-12  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56703  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 00:58:07  

Additional Information
 Earth MOID = 1.05971 au 
 Jupiter MOID = 2.28301 au 
 T_jup = 3.506 
[ 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 16.2   n/a MPO337387  
rotation period rot_per 14.023 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

15217 (1981 ET19)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

[ 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-Oct-29 05:20 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin