(92) Undina
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	11 Jan 2026	13.0	3.344 AU	3.712 AU	15h18m	-09°48'	60.8°	14.9°
Opposition	16 May 2026	11.4	3.227 AU	2.228 AU	15h42m	-08°58'	169.6°	3.2°

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 Undina are:

            e (Eccentricity)                : 0.1048647
            a (Semimajor axis)              : 3.1854747
            i (Inclination)                 : 9.92326
            Ω (Longitude of ascending node) : 101.39208
            ω (Argument of perihelion)      : 236.68467
            M (Mean anomaly)                : 238.16041
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 157.67917
            B (Latitude of perihelion)      : -8.27987
            P (Orbital period in years)     : 5.69            
        

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
2026-01-11 00:00 UT   15 18 55.0   -09 48 49     3.712    3.344   60.8   14.9   290   13.0 
2026-01-11 21:59 UT   15 19 54.6   -09 51 42     3.699    3.343   61.5   15.0   289   13.0 
2026-01-12 00:00 UT   15 20 00.1   -09 51 58     3.698    3.343   61.5   15.0   289   13.0 
2026-01-13 00:00 UT   15 21 04.7   -09 55 03     3.685    3.342   62.3   15.1   289   13.0 
2026-01-14 00:00 UT   15 22 08.8   -09 58 04     3.671    3.341   63.0   15.2   289   13.0 
2026-01-15 00:00 UT   15 23 12.5   -10 00 60     3.657    3.340   63.7   15.3   289   13.0 
2026-01-16 00:00 UT   15 24 15.8   -10 03 52     3.643    3.340   64.5   15.4   289   13.0 
2026-01-17 00:00 UT   15 25 18.5   -10 06 39     3.629    3.339   65.2   15.5   288   13.0 
2026-01-18 00:00 UT   15 26 20.8   -10 09 23     3.615    3.338   66.0   15.6   288   13.0 
2026-01-19 00:00 UT   15 27 22.5   -10 12 01     3.601    3.337   66.7   15.7   288   13.0 
2026-01-20 00:00 UT   15 28 23.8   -10 14 36     3.587    3.336   67.5   15.8   288   13.0 
2026-01-21 00:00 UT   15 29 24.5   -10 17 06     3.572    3.335   68.2   15.9   288   13.0 
2026-01-22 00:00 UT   15 30 24.7   -10 19 32     3.558    3.334   69.0   16.0   287   13.0 
2026-01-23 00:00 UT   15 31 24.3   -10 21 53     3.544    3.334   69.8   16.1   287   13.0 
2026-01-24 00:00 UT   15 32 23.4   -10 24 10     3.529    3.333   70.5   16.2   287   13.0 
2026-01-25 00:00 UT   15 33 21.9   -10 26 23     3.515    3.332   71.3   16.3   287   13.0 
2026-01-26 00:00 UT   15 34 19.9   -10 28 32     3.500    3.331   72.1   16.3   287   13.0 
2026-01-27 00:00 UT   15 35 17.2   -10 30 36     3.485    3.330   72.8   16.4   286   13.0 
2026-01-28 00:00 UT   15 36 13.9   -10 32 35     3.471    3.329   73.6   16.5   286   12.9 
2026-01-29 00:00 UT   15 37 10.1   -10 34 31     3.456    3.328   74.4   16.6   286   12.9 
2026-01-30 00:00 UT   15 38 05.6   -10 36 22     3.441    3.327   75.1   16.6   286   12.9 
2026-01-31 00:00 UT   15 39 00.4   -10 38 09     3.426    3.327   75.9   16.7   286   12.9 
2026-02-01 00:00 UT   15 39 54.7   -10 39 51     3.411    3.326   76.7   16.8   285   12.9 
2026-02-02 00:00 UT   15 40 48.3   -10 41 29     3.396    3.325   77.5   16.8   285   12.9 
2026-02-03 00:00 UT   15 41 41.2   -10 43 03     3.381    3.324   78.3   16.9   285   12.9 
2026-02-04 00:00 UT   15 42 33.4   -10 44 33     3.366    3.323   79.1   16.9   285   12.9 
2026-02-05 00:00 UT   15 43 25.0   -10 45 58     3.351    3.322   79.9   17.0   285   12.9 
2026-02-06 00:00 UT   15 44 15.8   -10 47 19     3.336    3.321   80.6   17.0   284   12.9 
2026-02-07 00:00 UT   15 45 05.9   -10 48 35     3.321    3.320   81.4   17.1   284   12.9 
2026-02-08 00:00 UT   15 45 55.3   -10 49 48     3.305    3.319   82.2   17.1   284   12.9 
2026-02-09 00:00 UT   15 46 43.9   -10 50 56     3.290    3.319   83.0   17.2   284   12.8 
2026-02-10 00:00 UT   15 47 31.8   -10 51 60     3.275    3.318   83.9   17.2   284   12.8 

    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.