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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07465532778430464 3.5575e-08  
a 3.172795557348877 1.3559e-08 au
q 2.935929465022411 1.1731e-07 au
i 15.95404571410397 3.8145e-06 deg
node 158.7977745562421 1.2279e-05 deg
peri 3.903971733019064 2.6015e-05 deg
M 348.2707211412197 2.3007e-05 deg
tp 2459463.755897232649
(2021-Sep-06.25589723)
0.00013197 TDB
period 2064.2465146635
5.65
1.3232e-05
3.623e-08
d
yr
n .1743977753832782 1.1179e-09 deg/d
Q 3.409661649675343 1.4571e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3431  
   data-arc span      36065 days (98.74 yr)  
   first obs. used      1922-09-21  
   last obs. used      2021-06-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38787  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 12:15:26  

Additional Information
 Earth MOID = 1.94533 au 
 Jupiter MOID = 1.56909 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 10.10   n/a MPO614063  
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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