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542 Susanna (A904 QA)
Classification: Main-belt Asteroid          SPK-ID: 2000542
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 106 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1412504717996798 3.5799e-08  
a 2.906560858193064 9.9348e-09 au
q 2.496007765658812 1.0567e-07 au
i 12.07339934494946 3.938e-06 deg
node 152.9566020492074 1.8073e-05 deg
peri 216.8084124371249 2.237e-05 deg
M 35.68808135291589 1.3224e-05 deg
tp 2458421.072809288886
(2018-Oct-29.57280929)
6.6384e-05 TDB
period 1809.954085713926
4.96
9.2798e-06
2.541e-08
d
yr
n .1989000731242307 1.0198e-09 deg/d
Q 3.317113950727317 1.1338e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2790  
   data-arc span      42079 days (115.21 yr)  
   first obs. used      1904-08-17  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47378  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 01:54:25  

Additional Information
 Earth MOID = 1.50408 au 
 Jupiter MOID = 2.1576 au 
 T_jup = 3.237 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.36   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 15
diameter diameter 42.117 km 0.402 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 10.069 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2007) Minor Planet Bull. 34, 102-103.]
[Collaborative Asteroid Lightcurve Link (CALL) (2011) http://www.minorplanetobserver.com/DATA/submissions_results.htm]
[Pravec, P.; Wolf, M.; Sarounova, L. (2011) http://www.asu.cas.cz/~ppravec/neo.htm]
[Behrend, R. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.217   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.795   0.007 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=13.09, mean=13.10, max.=13.11) deg.
U-B UB 0.380   0.028 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=13.09, mean=13.10, max.=13.11) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

542 Susanna (A904 QA)          Discovered 1904-Aug-15 by Gotz, P. and Kopff, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A904 QA = A921 BA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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