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JPL Small-Body Database Browser
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432 Pythia (A897 YC)
Classification: Main-belt Asteroid          SPK-ID: 2000432
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 76 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .146156337707624 4.4585e-08  
a 2.368655920144168 6.896e-09 au
q 2.022461845566415 1.0646e-07 au
i 12.12223088610096 5.012e-06 deg
node 88.74995129329398 2.0498e-05 deg
peri 174.1582106051788 2.5629e-05 deg
M 274.5043771012931 1.764e-05 deg
tp 2458916.722504513120
(2020-Mar-08.22250451)
6.5878e-05 TDB
period 1331.531343535544
3.65
5.8148e-06
1.592e-08
d
yr
n .2703653967649843 1.1807e-09 deg/d
Q 2.714849994721922 7.9039e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2336  
   data-arc span      43329 days (118.63 yr)  
   first obs. used      1900-09-22  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44479  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:07:22  

Additional Information
 Earth MOID = 1.00665 au 
 Jupiter MOID = 2.36497 au 
 T_jup = 3.502 
[ 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 8.84   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 27
diameter diameter 46.90 km 0.8 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 27
rotation period rot_per 8.252 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Lagerkvist, C.-I.; Rickman, H. (1981) Astron. Astrophys. Suppl. Ser. 45, 177-179.]
[Harris, A.W.; Young, J.W. (1989) Icarus 81, 314-364.]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.2338   0.009 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 27
B-V BV 0.870   0.008 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=9.49, mean=14.21, max.=22.41) deg.
U-B UB 0.440   0.016 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=9.49, mean=14.21, max.=22.41) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

432 Pythia (A897 YC)          Discovered 1897-Dec-18 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A897 YC = 1936 PR 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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