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 ]  
27680 (1981 EQ8)
Classification: Main-belt Asteroid          SPK-ID: 2027680
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2218863529517988 3.238e-08  
a 2.66286679401659 9.257e-09 au
q 2.0720129926958 8.6302e-08 au
i 3.562385456968804 3.8579e-06 deg
node 235.2150182177931 6.7425e-05 deg
peri 190.4261033768705 6.8456e-05 deg
M 92.71538696064123 1.0931e-05 deg
tp 2458591.736692663893
(2019-Apr-18.23669266)
4.7254e-05 TDB
period 1587.166871270972
4.35
8.2762e-06
2.266e-08
d
yr
n .226819250399121 1.1827e-09 deg/d
Q 3.25372059533738 1.1311e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1715  
   data-arc span      14321 days (39.21 yr)  
   first obs. used      1981-02-09  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51698  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 06:12:49  

Additional Information
 Earth MOID = 1.08577 au 
 Jupiter MOID = 2.06964 au 
 T_jup = 3.346 
[ 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 14.4   n/a MPO337492  

27680 (1981 EQ8)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 EQ8 = 1998 DH3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-03 19:03 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin