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JPL Small-Body Database Browser
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9782 Edo (1994 WM)
Classification: Main-belt Asteroid          SPK-ID: 2009782
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1587061357048494 5.3771e-08  
a 2.555889751332647 9.9014e-09 au
q 2.150254365611014 1.4132e-07 au
i 8.950976324235404 4.0513e-06 deg
node 60.39927987383462 2.662e-05 deg
peri 127.60905442 2.8703e-05 deg
M 246.3727080670531 1.3369e-05 deg
tp 2459071.576844431135
(2020-Aug-10.07684443)
5.6977e-05 TDB
period 1492.490590159314
4.09
8.6727e-06
2.374e-08
d
yr
n .2412075509042722 1.4016e-09 deg/d
Q 2.961525137054279 1.1473e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2099  
   data-arc span      9571 days (26.20 yr)  
   first obs. used      1993-08-17  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48518  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 03:19:24  

Additional Information
 Earth MOID = 1.16352 au 
 Jupiter MOID = 2.02709 au 
 T_jup = 3.403 
[ 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 13.2   n/a MPO381342  
diameter diameter 6.012 km 0.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.085 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2012) http://www.asu.cas.cz/~ppravec/neo.htm]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.213   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

9782 Edo           Discovered 1994 Nov. 25 by T. Kobayashi at Oizumi.
Edo is the former name for Tokyo, the capital and largest city of Japan. Edo became the center of Japanese politics in 1603, when Tokugawa Ieyasu opened the "Edo Bakufu" shogunate there.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20031110/MPCPages.arcLast Updated: 2003-11-12

Alternate Designations
 1994 WM = 1996 HB1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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