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

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2218895633176541 3.9684e-08  
a 2.663516932019631 1.0231e-08 au
q 2.072510323084618 1.0778e-07 au
i 3.562440867537228 4.693e-06 deg
node 235.2205614097659 6.7873e-05 deg
peri 190.4975606354056 6.8907e-05 deg
M 1.942014362923454 1.0801e-05 deg
tp 2458591.934917379754
(2019-Apr-18.43491738)
4.7616e-05 TDB
period 1587.748166108779
4.35
9.1484e-06
2.505e-08
d
yr
n .2267362089809751 1.3064e-09 deg/d
Q 3.254523540954645 1.2501e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1506  
   data-arc span      14167 days (38.79 yr)  
   first obs. used      1981-02-09  
   last obs. used      2019-11-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53992  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 01:06:56  

Additional Information
 Earth MOID = 1.086 au 
 Jupiter MOID = 2.06812 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 ]
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