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1330 Spiridonia (1925 DB)
Classification: Main-belt Asteroid          SPK-ID: 2001330
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB
Reference: MPO250208 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 0.0750861 n/a  
a 3.1700699 n/a AU
q 2.9320417 n/a AU
i 15.95597 n/a deg
node 158.85536 n/a deg
peri 6.72230 n/a deg
M 182.59006 n/a deg
tp 2457416.4612078
(2016-Jan-28.96120780)		 n/a JED
period 2061.5870498
5.64		 n/a
n/a		 d
yr
n 0.17462275 n/a deg/d
Q 3.4080981 n/a AU
   Orbit Determination Parameters
   # obs. used (total)      1005  
   first obs. used      1934-??-??  
   last obs. used      2012-11-22  
   # oppositions      27  
   planetary ephem.      DE403  
   condition code      0  
   fit RMS      0.53  
   data source      MPC:mpn  
   producer      MPCLINUX  

Additional Information
 T_jup = 3.138 

[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.17 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 28
diameter diameter 55.08 km 4.9 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 28
rotation period rot_per 9.67 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Published Reference List:
[Stephens, R.D. (2005) Minor Planet Bul. 32, 66-68.]
[Stephens, R.D. (2013) Minor Planet Bul. 40, 34-35.]
geometric albedo albedo 0.0498   0.010 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 28
B-V BV .670 mag .028 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=2; phase (min.=14.51, mean=14.52, max.=14.53) deg.
U-B UB .170 mag .045 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=2; phase (min.=14.51, mean=14.52, max.=14.53) deg.
Tholen spectral type spec_T P   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo

1330 Spiridonia (1925 DB)          Discovered 1925-Feb-17 by Albitzkij, V. at Simeis (094)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1925 DB = 1931 FA = 1933 QK1 = 1942 ED = 1950 OP = 1959 EZ = A922 SA 
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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