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 ]  
17772 (1998 EP13)
Classification: Main-belt Asteroid          SPK-ID: 2017772
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06056274757868598 3.1354e-08  
a 2.854454659326122 1.2571e-08 au
q 2.68158104231855 8.9824e-08 au
i 3.122640248032475 3.16e-06 deg
node 80.4459043355929 6.1989e-05 deg
peri 235.774615037851 6.8137e-05 deg
M 122.140497848679 2.766e-05 deg
tp 2458602.859066488571
(2019-Apr-29.35906649)
0.00013614 TDB
period 1761.502039484617
4.82
1.1637e-05
3.186e-08
d
yr
n .2043710378588771 1.3501e-09 deg/d
Q 3.027328276333694 1.3333e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2406  
   data-arc span      16204 days (44.36 yr)  
   first obs. used      1976-10-22  
   last obs. used      2021-03-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48477  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:12:35  

Additional Information
 Earth MOID = 1.66738 au 
 Jupiter MOID = 2.14098 au 
 T_jup = 3.299 
[ 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 13.6   n/a MPO449081  
rotation period rot_per 44.826 h n/a LCDB (Rev. 2020-October); 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:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]

17772 (1998 EP13)          Discovered 1998-Mar-01 by Elst, E. W. at La Silla
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 EP13 = 1976 UC18 = 1990 SZ18 = 1994 LF6 = 1999 NE13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-18 11:57 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin