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332 Siri (A892 FH)
Classification: Main-belt Asteroid          SPK-ID: 2000332
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08807346179814235 3.5543e-08  
a 2.774153084508201 9.0304e-09 au
q 2.52982381879757 9.797e-08 au
i 2.844655497315168 4.0304e-06 deg
node 31.55964137778674 7.7521e-05 deg
peri 297.5986354766951 8.0858e-05 deg
M 123.689521601697 2.3389e-05 deg
tp 2458420.638239006519
(2018-Oct-29.13823901)
0.00010966 TDB
period 1687.695378351186
4.62
8.2406e-06
2.256e-08
d
yr
n .2133086365098103 1.0415e-09 deg/d
Q 3.018482350218834 9.8257e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3247  
   data-arc span      46785 days (128.09 yr)  
   first obs. used      1892-03-19  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45089  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:03:38  

Additional Information
 Earth MOID = 1.52028 au 
 Jupiter MOID = 2.26034 au 
 T_jup = 3.329 
[ 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 9.7   n/a MPO319084  
diameter diameter 40.37 km 1.8 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
rotation period rot_per 8.0074 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Higgins, D.; Pravec, P.; Kusnirak, P.; Hornoch, K.; Brinsfield, J.W.; Allen, B.; Warner, B.D. (2008) Minor Planet Bull. 35, 123-126.]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.1719   0.017 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
SMASSII spectral type spec_B Xk   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)

332 Siri (A892 FH)          Discovered 1892-Mar-19 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2092-Oct-05 12:29 00:04 Amphi 0.0333004122449204 0.033295394896271 0.03330542977762 2.05366217157396 2.05366208751299 2485426.020153036 4.09489917084318 278.727337150227 30.9058710968036 -26.5864045051666 73743.8365179784 T 41 CATAB v2.0f-lin.ifort 2020-May-20 01:03:52 2020-May-20 01:04

Alternate Designations
 A892 FH = A896 BA = A922 XA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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