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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 80 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .541192724871488 2.5879e-08  
a 2.199287934400143 1.7428e-09 au
q 1.009049304405143 5.6661e-08 au
i 13.53063688659662 4.9924e-06 deg
node 82.09762289578774 1.6508e-05 deg
peri 204.2277409522411 1.7275e-05 deg
M 304.8556796126329 5.434e-06 deg
tp 2457782.981924422506
(2017-Jan-29.48192442)
1.8159e-05 JED
period 1191.301159042877
3.26
1.416e-06
3.877e-09
d
yr
n .3021905899002344 3.592e-10 deg/d
Q 3.389526564395142 2.686e-09 au
  Orbit Determination Parameters
   # obs. used (total)      490  
   data-arc span      11629 days (31.84 yr)  
   first obs. used      1984-05-27  
   last obs. used      2016-03-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58616  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:44:56  

Additional Information
 Earth MOID = .0216834 au 
 Jupiter MOID = 1.8295 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 16.5 mag n/a MPO365290  
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. 2016-February); 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
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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