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116 Sirona
Classification: Main-belt Asteroid          SPK-ID: 2000116
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 87 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1424406530560438 3.5625e-08  
a 2.767412854707682 9.0129e-09 au
q 2.373220760407429 9.9893e-08 au
i 3.563481952451517 4.7067e-06 deg
node 63.72428745768961 6.8989e-05 deg
peri 94.93221867994748 7.0763e-05 deg
M 7.592311023478271 1.6091e-05 deg
tp 2457565.036561024763
(2016-Jun-25.53656102)
7.5137e-05 JED
period 1681.548344319093
4.60
8.2147e-06
2.249e-08
d
yr
n .2140884032363484 1.0459e-09 deg/d
Q 3.161604949007935 1.0297e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1848  
   data-arc span      52345 days (143.31 yr)  
   first obs. used      1872-12-23  
   last obs. used      2016-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58094  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:25:30  

Additional Information
 Earth MOID = 1.38451 au 
 Jupiter MOID = 1.83156 au 
 T_jup = 3.321 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.82 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5
diameter diameter 71.70 km 5.8 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5
rotation period rot_per 12.028 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Published Reference List:
[Zeigler, K.W.; Florence, W.B. (1985) Icarus 62, 512-517.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.2560   0.047 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5
B-V BV .873 mag .073 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=2; phase (min.=5.71, mean=12.00, max.=18.29) deg.
U-B UB .429 mag .030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=2; phase (min.=5.71, mean=12.00, max.=18.29) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Sk   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)

116 Sirona          Discovered 1871-Sep-08 by Peters, C. H. F. at Clinton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1954 UC3 = 1998 EK13 = 1998 ES21 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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