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

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0747084376516475 3.5753e-08  
a 3.172752098032567 1.373e-08 au
q 2.935720745732567 1.1766e-07 au
i 15.95297707422523 3.8537e-06 deg
node 158.8001723029881 1.2589e-05 deg
peri 3.99466503543945 2.6444e-05 deg
M 314.0098226839076 2.3493e-05 deg
tp 2459464.203090785884
(2021-Sep-06.70309079)
0.00013494 TDB
period 2064.204102333396
5.65
1.3399e-05
3.668e-08
d
yr
n .1744013586607316 1.1321e-09 deg/d
Q 3.409783450332567 1.4755e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3193  
   data-arc span      35920 days (98.34 yr)  
   first obs. used      1922-09-21  
   last obs. used      2021-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39692  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:54:24  

Additional Information
 Earth MOID = 1.94407 au 
 Jupiter MOID = 1.56953 au 
 T_jup = 3.137 
[ 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 10.11   n/a E2021B10  
diameter diameter 68.417 km 0.584 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 9.67 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2001) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Stephens, R.D. (2005) Minor Planet Bull. 32, 66-68.]
[Stephens, R.D. (2013) Minor Planet Bull. 40, 34-35.]
[Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.032   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.670   0.028 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=14.51, mean=14.52, max.=14.53) deg.
U-B UB 0.170   0.045 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #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
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1925 DB = 1931 FA = 1933 QK1 = 1942 ED = 1950 OP = 1959 EZ = A922 SA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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