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3671 Dionysus (1984 KD)
Classification: Apollo [NEO, PHA]          SPK-ID: 2003671
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 68 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5422319805465881 2.7519e-08  
a 2.197748300697588 1.6234e-09 AU
q 1.006058886867436 6.0256e-08 AU
i 13.54793678476692 5.4918e-06 deg
node 82.16317076810668 1.745e-05 deg
peri 204.2029701852552 1.8913e-05 deg
M 123.4153519997451 5.8286e-06 deg
tp 2456592.526417892487
(2013-Oct-27.02641789)
1.8935e-05 JED
period 1190.050404418148
3.26
1.3186e-06
3.61e-09
d
yr
n .3025081951684349 3.3519e-10 deg/d
Q 3.389437714527739 2.5037e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      459  
   data-arc span      10559 days (28.91 yr)  
   first obs. used      1984-05-27  
   last obs. used      2013-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59368  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 17:54:00  

Additional Information
 Earth MOID = .0204595 AU 
 T_jup = 3.429 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.4 mag n/a MPO263379  
diameter diameter 1.5 km n/a Delbo et al. (2003). Icarus, v. 166, pp. 116-130  
rotation period rot_per 2.7053 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Mottola, S.; Hahn, G.; Pravec, P.; Sarounova, L. (1997) IAUC 6680; http://www.eso.org/outreach/press-rel/pr-1997 /pr-08-97.html.]
[Pravec, P.; et al. (2006) Icarus 181, 63-93.]
geometric albedo albedo 0.16   n/a Delbo et al. (2003). Icarus, v. 166, pp. 116-130  
SMASSII spectral type spec_B Cb   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

3671 Dionysus (1984 KD)          Discovered 1984-May-27 by Shoemaker, C. and Shoemaker, E. at Palomar (675)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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