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JPL Small-Body Database Browser
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459 Signe (A900 UH)
Classification: Main-belt Asteroid          SPK-ID: 2000459
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2104880815445612 4.1488e-08  
a 2.619956433617578 7.8519e-09 au
q 2.068486830175083 1.095e-07 au
i 10.29948469946977 4.7502e-06 deg
node 29.48005921698479 2.4032e-05 deg
peri 19.59123015567371 2.6058e-05 deg
M 322.1595190238291 1.0494e-05 deg
tp 2458763.314724424567
(2019-Oct-06.81472442)
4.5433e-05 TDB
period 1548.957605209996
4.24
6.9632e-06
1.906e-08
d
yr
n .2324143661447685 1.0448e-09 deg/d
Q 3.171426037060072 9.5046e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2128  
   data-arc span      43500 days (119.10 yr)  
   first obs. used      1900-10-23  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41955  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:07:38  

Additional Information
 Earth MOID = 1.08056 au 
 Jupiter MOID = 2.2547 au 
 T_jup = 3.351 
[ 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 10.44   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2
diameter diameter 25.784 km 0.174 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.5362 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Collaborative Asteroid Lightcurve Link (CALL) (2011) http://www.minorplanetobserver.com/DATA/submissions_results.htm]
[Klinglesmith III, D.K. (2017) Minor Planet Bull. 44, 345-348.]
geometric albedo albedo 0.221   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.869   0.024 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=10.21 deg.
U-B UB 0.453   0.043 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=10.21 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

459 Signe (A900 UH)          Discovered 1900-Oct-22 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A900 UH = 1934 VH = 1938 SE1 = A917 TF = A921 RD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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