(116) Sirona
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	10 Feb 2026	12.5	2.470 AU	2.169 AU	14h54m	-13°47'	95.7°	23.4°
Opposition	3 May 2026	10.9	2.567 AU	1.559 AU	14h44m	-13°44'	177.9°	0.8°

The interactive orbit chart above shows the body's path through the solar system and its position at the given date. Green and blue lines are shown perpendicular to the ecliptic plane: Green if the path is above the ecliptic plane, blue if it is below. (Left-click and drag to rotate the view; Right-click and drag to move the view; Use scroll wheel to zoom in our out.)

The orbital elements of Sirona are:

            e (Eccentricity)                : 0.1380527
            a (Semimajor axis)              : 2.7683960
            i (Inclination)                 : 3.56136
            Ω (Longitude of ascending node) : 63.67472
            ω (Argument of perihelion)      : 93.95979
            M (Mean anomaly)                : 16.48866
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : -22.35785
            B (Latitude of perihelion)      : 3.55285
            P (Orbital period in years)     : 4.61            
        

The light curve chart below shows the estimated development of the minor planet's magnitude.

The all-sky chart below shows the path of the minor planet over the same period as the light curve. The current position is marked yellow.

The following chart shows the path of the minor planet in the next few days. The field of view is optimized for (~10x50) binoculars and finderscopes.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2026-02-10 00:00 UT   14 54 02.4   -13 47 02     2.169    2.470   95.7   23.4   287   12.5 
2026-02-10 01:29 UT   14 54 05.7   -13 47 17     2.168    2.470   95.8   23.4   287   12.5 
2026-02-11 00:00 UT   14 54 55.4   -13 50 48     2.157    2.471   96.5   23.4   286   12.5 
2026-02-12 00:00 UT   14 55 47.3   -13 54 27     2.145    2.472   97.3   23.3   286   12.5 
2026-02-13 00:00 UT   14 56 37.9   -13 58 00     2.133    2.473   98.1   23.3   286   12.5 
2026-02-14 00:00 UT   14 57 27.3   -14 01 28     2.121    2.474   98.9   23.2   286   12.5 
2026-02-15 00:00 UT   14 58 15.5   -14 04 49     2.110    2.476   99.7   23.2   286   12.5 
2026-02-16 00:00 UT   14 59 02.4   -14 08 05     2.098    2.477  100.5   23.1   286   12.4 
2026-02-17 00:00 UT   14 59 48.0   -14 11 15     2.086    2.478  101.3   23.0   286   12.4 
2026-02-18 00:00 UT   15 00 32.4   -14 14 18     2.074    2.479  102.2   22.9   286   12.4 
2026-02-19 00:00 UT   15 01 15.3   -14 17 16     2.063    2.480  103.0   22.9   286   12.4 
2026-02-20 00:00 UT   15 01 57.0   -14 20 07     2.051    2.481  103.8   22.8   286   12.4 
2026-02-21 00:00 UT   15 02 37.3   -14 22 53     2.040    2.482  104.7   22.7   285   12.4 
2026-02-22 00:00 UT   15 03 16.1   -14 25 33     2.028    2.483  105.5   22.6   285   12.4 
2026-02-23 00:00 UT   15 03 53.6   -14 28 06     2.017    2.484  106.3   22.5   285   12.3 
2026-02-24 00:00 UT   15 04 29.7   -14 30 34     2.005    2.485  107.2   22.4   285   12.3 
2026-02-25 00:00 UT   15 05 04.3   -14 32 56     1.994    2.486  108.1   22.2   285   12.3 
2026-02-26 00:00 UT   15 05 37.5   -14 35 12     1.983    2.487  108.9   22.1   285   12.3 
2026-02-27 00:00 UT   15 06 09.3   -14 37 22     1.972    2.488  109.8   22.0   285   12.3 
2026-02-28 00:00 UT   15 06 39.5   -14 39 26     1.961    2.489  110.7   21.9   285   12.3 
2026-03-01 00:00 UT   15 07 08.2   -14 41 24     1.950    2.490  111.6   21.7   285   12.3 
2026-03-02 00:00 UT   15 07 35.4   -14 43 16     1.939    2.491  112.4   21.6   285   12.2 
2026-03-03 00:00 UT   15 08 01.1   -14 45 02     1.928    2.492  113.3   21.4   285   12.2 
2026-03-04 00:00 UT   15 08 25.3   -14 46 42     1.917    2.494  114.2   21.3   284   12.2 
2026-03-05 00:00 UT   15 08 47.8   -14 48 17     1.906    2.495  115.1   21.1   284   12.2 
2026-03-06 00:00 UT   15 09 08.8   -14 49 45     1.896    2.496  116.1   20.9   284   12.2 
2026-03-07 00:00 UT   15 09 28.2   -14 51 07     1.885    2.497  117.0   20.7   284   12.2 
2026-03-08 00:00 UT   15 09 45.9   -14 52 24     1.875    2.498  117.9   20.6   284   12.1 
2026-03-09 00:00 UT   15 10 02.0   -14 53 34     1.864    2.499  118.8   20.4   284   12.1 
2026-03-10 00:00 UT   15 10 16.5   -14 54 39     1.854    2.500  119.8   20.2   284   12.1 
2026-03-11 00:00 UT   15 10 29.3   -14 55 37     1.844    2.501  120.7   20.0   284   12.1 
2026-03-12 00:00 UT   15 10 40.4   -14 56 30     1.834    2.503  121.7   19.8   284   12.1 

    Terminology:
            
    delta:  distance between minor planet and earth in AU
    radius: distance between minor planet and sun in AU
    magn:   magnitude (brightness) estimate    
    ra:     right ascension in hours (24h = 360deg)
    dec:    declination in degrees
    elong:  elongation in degrees (angle sun-earth-minor planet)    
    phase:  phase angle in degrees (angle sun-minor planet-earth)        
    AU:     Astronomical Unit (mean distance between earth and sun: 149597870.7 km
    

Orbital elements provided by the MPC (Minor Planet Center).
Calculations by a modified version of AAPlus, a C# implementation of the AA+ project by PJ Naughter from the algorithms presented in the book "Astronomical Algorithms" by Jean Meeus.
NGC2000 dso catalog and star labels from VizieR as provided by the Strasbourg astronomical Data Center.
Tycho2 catalog from the ESO archive.