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 ]  
15251 (1990 EF2)
Classification: Main-belt Asteroid          SPK-ID: 2015251
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07671019675884504 4.0889e-08  
a 2.171843156217856 5.7106e-09 au
q 2.005240640375033 8.8544e-08 au
i 3.710996929803916 4.0282e-06 deg
node 252.835502349562 5.1702e-05 deg
peri 301.7899157090417 5.5256e-05 deg
M 198.9757780362008 1.9691e-05 deg
tp 2459723.413463129177
(2022-May-23.91346313)
6.4161e-05 TDB
period 1169.071611902121
3.20
4.6109e-06
1.262e-08
d
yr
n .3079366536103525 1.2145e-09 deg/d
Q 2.338445672060678 6.1487e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1958  
   data-arc span      11322 days (31.00 yr)  
   first obs. used      1990-02-24  
   last obs. used      2021-02-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47633  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:52:50  

Additional Information
 Earth MOID = 1.0055 au 
 Jupiter MOID = 2.6286 au 
 T_jup = 3.681 
[ 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 15.12   n/a E2021B10  
diameter diameter 2.054 km 0.269 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.503   0.130 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15251 (1990 EF2)          Discovered 1990-Mar-02 by Elst, E. W. at La Silla
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 EF2 = 1994 RH5 
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-16 03:42 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin