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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 70 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5422319786652254 2.7348e-08  
a 2.197748300640029 1.6197e-09 AU
q 1.006058890975849 5.9884e-08 AU
i 13.54793681798276 5.4872e-06 deg
node 82.16316993483981 1.7401e-05 deg
peri 204.2029699796835 1.8824e-05 deg
M 123.4153524150606 5.7882e-06 deg
tp 2456592.526416535607
(2013-Oct-27.02641654)
1.8802e-05 JED
period 1190.050404371397
3.26
1.3155e-06
3.602e-09
d
yr
n .302508195180319 3.3441e-10 deg/d
Q 3.389437710304208 2.4979e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      463  
   data-arc span      11173 days (30.59 yr)  
   first obs. used      1984-05-27  
   last obs. used      2014-12-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59188  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 00:03:25  

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 LCDB (Rev. 2015-Feb); Warner et al., 2009 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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