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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2107011458742107 4.1135e-08  
a 2.620512150588536 7.2213e-09 au
q 2.06836723768224 1.0829e-07 au
i 10.29844236859674 4.5557e-06 deg
node 29.47475355861498 2.3376e-05 deg
peri 19.56481704358386 2.5277e-05 deg
M 55.12691816084638 9.5005e-06 deg
tp 2458763.232143460969
(2019-Oct-06.73214346)
4.0626e-05 TDB
period 1549.450453675418
4.24
6.4047e-06
1.754e-08
d
yr
n .2323404398934163 9.6038e-10 deg/d
Q 3.172657063494833 8.7428e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2314  
   data-arc span      43567 days (119.28 yr)  
   first obs. used      1900-10-23  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40865  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:27:50  

Additional Information
 Earth MOID = 1.08093 au 
 Jupiter MOID = 2.25519 au 
 T_jup = 3.351 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456127.5 (2012-Jul-19.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2090067700925572 4.0796e-08  
q 2.073035643282521 1.0704e-07 au
tp 2455659.107088631347
(2011-Apr-07.60708863)
3.9923e-05 TDB
node 29.54307869950679 2.3373e-05 deg
peri 18.83569023788748 2.5353e-05 deg
i 10.30023533235734 4.5519e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2314  
   data-arc span      43567 days (119.28 yr)  
   first obs. used      1900-10-23  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40865  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:27:50  

Additional Information
 Jupiter MOID = 2.25519 au 
 T_jup = 3.351 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.664302458769591E-15 -4.360798080570202E-15 1.723935563405134E-13 4.84673828218913E-15 1.650738981057586E-14 -2.642573830603932E-15
q -4.360798080570202E-15 1.145854907808889E-14 -4.546602073452686E-13 -1.197398527690748E-14 -4.224241016444616E-14 7.053434438370827E-15
tp 1.723935563405134E-13 -4.546602073452686E-13 1.59385949718818E-9 -1.913331942436987E-13 4.077140113630088E-10 -7.572220004984026E-13
node 4.84673828218913E-15 -1.197398527690748E-14 -1.913331942436987E-13 5.462803989431677E-10 -5.370861015565788E-10 1.274096403981462E-11
peri 1.650738981057586E-14 -4.224241016444616E-14 4.077140113630088E-10 -5.370861015565788E-10 6.427599646897348E-10 -1.277794561839977E-11
i -2.642573830603932E-15 7.053434438370827E-15 -7.572220004984026E-13 1.274096403981462E-11 -1.277794561839977E-11 2.071970235830307E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.3   n/a MPO502157 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-August); 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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