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557 Violetta (A905 BD)
Classification: Main-belt Asteroid          SPK-ID: 2000557
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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09909613576769295 1.0168e-08  
a 2.442874606344359 5.7484e-09 au
q 2.200795172690609 2.4453e-08 au
i 2.489588797312216 6.1466e-07 deg
node 292.7933310401788 2.0316e-05 deg
peri 194.9912657657527 2.8021e-05 deg
M 133.1924138388592 1.3747e-05 deg
tp 2458684.526759960254
(2019-Jul-20.02675996)
5.3227e-05 TDB
period 1394.601697353693
3.82
4.9226e-06
1.348e-08
d
yr
n .2581382201693237 9.1116e-10 deg/d
Q 2.68495403999811 6.3181e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3537  
   data-arc span      42259 days (115.70 yr)  
   first obs. used      1905-01-15  
   last obs. used      2020-09-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43546  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 11:22:14  

Additional Information
 Earth MOID = 1.21591 au 
 Jupiter MOID = 2.35496 au 
 T_jup = 3.492 
[ 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 12.20   n/a E2021B10  
diameter diameter 22.621 km 0.147 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.0887 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pilcher, F. (2008) Minor Planet Bull. 35, 135-138.]
[Kaminski, L.J.; Leake, M.A.; Berget, D.J. (2010) J. SE Assoc. for Research in Astron. 3, 25-31.]
geometric albedo albedo 0.084   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

557 Violetta (A905 BD)          Discovered 1905-Jan-26 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A905 BD = 1932 EH1 = 1947 CD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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