(173) Ino
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	24 Jan 2026	14.1	3.265 AU	3.445 AU	15h34m	-06°23'	71.3°	16.6°
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) : 148.12338
            ω (Argument of perihelion)      : 228.56304
            M (Mean anomaly)                : 195.38040
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 195.80339
            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
2026-01-24 00:00 UT   15 34 23.1   -06 23 39     3.445    3.265   71.3   16.6   288   14.1 
2026-01-24 03:57 UT   15 34 32.8   -06 23 37     3.443    3.265   71.4   16.6   288   14.1 
2026-01-25 00:00 UT   15 35 21.9   -06 23 22     3.431    3.264   72.0   16.7   288   14.1 
2026-01-26 00:00 UT   15 36 20.2   -06 22 58     3.416    3.264   72.8   16.7   288   14.0 
2026-01-27 00:00 UT   15 37 17.8   -06 22 29     3.402    3.263   73.6   16.8   288   14.0 
2026-01-28 00:00 UT   15 38 14.8   -06 21 54     3.387    3.262   74.3   16.9   287   14.0 
2026-01-29 00:00 UT   15 39 11.2   -06 21 13     3.373    3.261   75.1   17.0   287   14.0 
2026-01-30 00:00 UT   15 40 07.0   -06 20 26     3.358    3.260   75.9   17.0   287   14.0 
2026-01-31 00:00 UT   15 41 02.1   -06 19 34     3.343    3.260   76.6   17.1   287   14.0 
2026-02-01 00:00 UT   15 41 56.5   -06 18 35     3.329    3.259   77.4   17.2   286   14.0 
2026-02-02 00:00 UT   15 42 50.3   -06 17 31     3.314    3.258   78.2   17.2   286   14.0 
2026-02-03 00:00 UT   15 43 43.4   -06 16 20     3.299    3.257   79.0   17.3   286   14.0 
2026-02-04 00:00 UT   15 44 35.8   -06 15 04     3.284    3.256   79.8   17.3   286   14.0 
2026-02-05 00:00 UT   15 45 27.5   -06 13 42     3.269    3.256   80.5   17.4   285   14.0 
2026-02-06 00:00 UT   15 46 18.5   -06 12 14     3.254    3.255   81.3   17.4   285   14.0 
2026-02-07 00:00 UT   15 47 08.7   -06 10 40     3.239    3.254   82.1   17.5   285   14.0 
2026-02-08 00:00 UT   15 47 58.2   -06 08 60     3.224    3.253   82.9   17.5   285   13.9 
2026-02-09 00:00 UT   15 48 47.0   -06 07 14     3.209    3.252   83.7   17.5   284   13.9 
2026-02-10 00:00 UT   15 49 34.9   -06 05 22     3.194    3.251   84.5   17.6   284   13.9 
2026-02-11 00:00 UT   15 50 22.1   -06 03 23     3.179    3.251   85.3   17.6   284   13.9 
2026-02-12 00:00 UT   15 51 08.4   -06 01 19     3.164    3.250   86.1   17.6   284   13.9 
2026-02-13 00:00 UT   15 51 54.0   -05 59 09     3.149    3.249   86.9   17.7   283   13.9 
2026-02-14 00:00 UT   15 52 38.6   -05 56 53     3.134    3.248   87.7   17.7   283   13.9 
2026-02-15 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 

    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.