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 ]  
11877 (1990 EL8)
Classification: Main-belt Asteroid          SPK-ID: 2011877
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03737995529987712 4.5896e-08  
a 2.382639645587402 1.494e-08 au
q 2.29357668213963 1.1043e-07 au
i 4.209589267819209 6.5683e-06 deg
node 352.3107431075916 6.2817e-05 deg
peri 289.2832458000436 0.00011485 deg
M 267.2707714191923 0.00010011 deg
tp 2457746.519137146875
(2016-Dec-24.01913715)
0.00037467 JED
period 1343.340080353659
3.68
1.2635e-05
3.459e-08
d
yr
n .2679887284426318 2.5206e-09 deg/d
Q 2.471702609035174 1.5499e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1248  
   data-arc span      10612 days (29.05 yr)  
   first obs. used      1986-03-04  
   last obs. used      2015-03-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .4567  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 16:13:06  

Additional Information
 Earth MOID = 1.2798 au 
 Jupiter MOID = 2.5659 au 
 T_jup = 3.533 
[ 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 13.5 mag n/a MPO319233  
rotation period rot_per 3.057 h n/a LCDB (Rev. 2015-December); 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.]

11877 (1990 EL8)          Discovered 1990-Mar-05 by Debehogne, H. at La Silla
Reference: 19991026/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 EL8 = 1991 PJ14 = 1995 TU2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Feb-12 09:46 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin