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 ]  
24684 (1990 EU4)
Classification: Main-belt Asteroid          SPK-ID: 2024684
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08075290363912162 3.6302e-08  
a 2.318371681925927 7.7094e-09 au
q 2.131156436895694 8.654e-08 au
i 3.944953028281074 3.4014e-06 deg
node 337.7254460324651 6.1017e-05 deg
peri 179.1574272939817 6.6949e-05 deg
M 269.9629034307274 2.754e-05 deg
tp 2459522.971993991471
(2021-Nov-04.47199399)
9.9061e-05 TDB
period 1289.356523703676
3.53
6.4313e-06
1.761e-08
d
yr
n .2792090421708187 1.3927e-09 deg/d
Q 2.505586926956159 8.3319e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1640  
   data-arc span      14353 days (39.30 yr)  
   first obs. used      1981-10-24  
   last obs. used      2021-02-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48009  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:46:55  

Additional Information
 Earth MOID = 1.14014 au 
 Jupiter MOID = 2.47393 au 
 T_jup = 3.572 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.03   n/a MPCxxxxx  
rotation period rot_per 5.134 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.]

24684 (1990 EU4)          Discovered 1990-Mar-02 by Elst, E. W. at La Silla
Reference: 20010606/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 EU4 = 1981 UG28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-25 10:29 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin