(173) Ino
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	14 Feb 2026	13.9	3.248 AU	3.134 AU	15h52m	-05°56'	87.7°	17.7°
Opposition	14 May 2026	12.6	3.149 AU	2.183 AU	15h44m	+01°24'	159.4°	6.5°

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 Ino are:

            e (Eccentricity)                : 0.2095126
            a (Semimajor axis)              : 2.7416584
            i (Inclination)                 : 14.19489
            Ω (Longitude of ascending node) : 148.12337
            ω (Argument of perihelion)      : 228.56304
            M (Mean anomaly)                : 195.38040
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 195.80338
            B (Latitude of perihelion)      : -10.59341
            P (Orbital period in years)     : 4.54            
        

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
2026-02-14 00:00 UT   15 52 38.6   -05 56 53     3.134    3.248   87.7   17.7   283   13.9 
2026-02-14 08:13 UT   15 52 53.8   -05 56 05     3.129    3.248   88.0   17.7   283   13.9 
2026-02-15 00:00 UT   15 53 22.5   -05 54 31     3.119    3.247   88.5   17.7   283   13.9 
2026-02-16 00:00 UT   15 54 05.5   -05 52 03     3.104    3.246   89.4   17.7   283   13.9 
2026-02-17 00:00 UT   15 54 47.6   -05 49 29     3.088    3.245   90.2   17.7   282   13.9 
2026-02-18 00:00 UT   15 55 28.8   -05 46 50     3.073    3.245   91.0   17.7   282   13.8 
2026-02-19 00:00 UT   15 56 09.1   -05 44 04     3.058    3.244   91.8   17.7   282   13.8 
2026-02-20 00:00 UT   15 56 48.5   -05 41 12     3.043    3.243   92.6   17.7   281   13.8 
2026-02-21 00:00 UT   15 57 26.9   -05 38 15     3.028    3.242   93.5   17.7   281   13.8 
2026-02-22 00:00 UT   15 58 04.4   -05 35 11     3.013    3.241   94.3   17.7   281   13.8 
2026-02-23 00:00 UT   15 58 40.9   -05 32 02     2.998    3.240   95.1   17.7   281   13.8 
2026-02-24 00:00 UT   15 59 16.5   -05 28 47     2.983    3.239   96.0   17.7   280   13.8 
2026-02-25 00:00 UT   15 59 51.1   -05 25 27     2.968    3.238   96.8   17.7   280   13.8 
2026-02-26 00:00 UT   16 00 24.7   -05 22 01     2.953    3.237   97.7   17.6   280   13.7 
2026-02-27 00:00 UT   16 00 57.2   -05 18 29     2.938    3.236   98.5   17.6   279   13.7 
2026-02-28 00:00 UT   16 01 28.8   -05 14 52     2.923    3.235   99.4   17.6   279   13.7 
2026-03-01 00:00 UT   16 01 59.3   -05 11 09     2.908    3.234  100.2   17.5   279   13.7 
2026-03-02 00:00 UT   16 02 28.8   -05 07 20     2.894    3.233  101.1   17.5   279   13.7 
2026-03-03 00:00 UT   16 02 57.2   -05 03 26     2.879    3.233  101.9   17.5   278   13.7 
2026-03-04 00:00 UT   16 03 24.6   -04 59 27     2.864    3.232  102.8   17.4   278   13.7 
2026-03-05 00:00 UT   16 03 50.8   -04 55 22     2.849    3.231  103.7   17.4   278   13.7 
2026-03-06 00:00 UT   16 04 16.0   -04 51 12     2.835    3.230  104.5   17.3   277   13.6 
2026-03-07 00:00 UT   16 04 40.1   -04 46 56     2.820    3.229  105.4   17.2   277   13.6 
2026-03-08 00:00 UT   16 05 03.0   -04 42 36     2.806    3.228  106.3   17.2   277   13.6 
2026-03-09 00:00 UT   16 05 24.8   -04 38 10     2.791    3.227  107.1   17.1   276   13.6 
2026-03-10 00:00 UT   16 05 45.4   -04 33 39     2.777    3.226  108.0   17.0   276   13.6 
2026-03-11 00:00 UT   16 06 04.9   -04 29 03     2.763    3.225  108.9   16.9   276   13.6 
2026-03-12 00:00 UT   16 06 23.2   -04 24 22     2.749    3.224  109.8   16.9   275   13.6 
2026-03-13 00:00 UT   16 06 40.3   -04 19 36     2.735    3.223  110.7   16.8   275   13.5 
2026-03-14 00:00 UT   16 06 56.2   -04 14 45     2.721    3.222  111.6   16.7   275   13.5 
2026-03-15 00:00 UT   16 07 10.9   -04 09 49     2.707    3.221  112.5   16.6   274   13.5 
2026-03-16 00:00 UT   16 07 24.3   -04 04 49     2.693    3.220  113.4   16.5   274   13.5 

    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.