Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
579 Sidonia (A905 VK)
Classification: Main-belt Asteroid          SPK-ID: 2000579
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07761765398673685 3.8873e-08  
a 3.01154563317742 1.2427e-08 au
q 2.777796526256187 1.1858e-07 au
i 11.01925495019979 4.4533e-06 deg
node 82.64888267601096 2.2169e-05 deg
peri 228.3835388614782 3.6016e-05 deg
M 65.36764577537319 2.921e-05 deg
tp 2458653.888520076177
(2019-Jun-19.38852008)
0.00015446 TDB
period 1908.897456722947
5.23
1.1816e-05
3.235e-08
d
yr
n .1885905388642621 1.1673e-09 deg/d
Q 3.245294740098653 1.3392e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2658  
   data-arc span      41258 days (112.96 yr)  
   first obs. used      1907-01-23  
   last obs. used      2020-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43099  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 17:33:22  

Additional Information
 Earth MOID = 1.77658 au 
 Jupiter MOID = 1.94982 au 
 T_jup = 3.217 
[ 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 7.9   n/a MPO502158 IRAS observations used: 24
diameter diameter 85.57 km 2.2 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 24
rotation period rot_per 16.286 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Binzel, R.P. (1987) Icarus 72, 135-208.]
[Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R.; Greenberg, R.; et al. (1990) Icarus 86, 402-447.]
[Stephens, R.D. (2010) Minor Planet Bull. 37, 28-29.]
geometric albedo albedo 0.1748   0.009 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 24
B-V BV 0.818   0.027 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=4.79, mean=11.41, max.=16.08) deg.
U-B UB 0.418   0.038 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=4.79, mean=12.24, max.=16.08) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B K   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)

579 Sidonia (A905 VK)          Discovered 1905-Nov-03 by Kopff, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-22 08:27 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin