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 ]  
15680 (1981 EV7)
Classification: Main-belt Asteroid          SPK-ID: 2015680
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05007041558131078 3.1321e-08  
a 2.746483987419361 1.2421e-08 au
q 2.608966392781858 8.6747e-08 au
i 4.281562869103736 3.6061e-06 deg
node 254.5867779271609 4.9781e-05 deg
peri 68.10014996688342 6.4225e-05 deg
M 120.7956315862901 3.9548e-05 deg
tp 2458642.656005533614
(2019-Jun-08.15600553)
0.00018282 TDB
period 1662.509110393125
4.55
1.1278e-05
3.088e-08
d
yr
n .2165401667572653 1.4689e-09 deg/d
Q 2.884001582056863 1.3042e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1499  
   data-arc span      15503 days (42.44 yr)  
   first obs. used      1978-09-01  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49326  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:05:39  

Additional Information
 Earth MOID = 1.59792 au 
 Jupiter MOID = 2.27228 au 
 T_jup = 3.342 
[ 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 14.48   n/a E2021B10  
diameter diameter 6.489 km 0.154 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.088   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15680 (1981 EV7)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20000726/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 2021-Apr-16 09:08 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin