(92) Undina
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	17 Jul 2026	12.2	3.166 AU	2.605 AU	15h13m	-10°37'	114.5°	17.0°
Opposition	15 Aug 2027	10.7	2.862 AU	1.859 AU	21h54m	-23°28'	169.8°	3.6°

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)                : 0.1047890
            a (Semimajor axis)              : 3.1862141
            i (Inclination)                 : 9.92313
            Ω (Longitude of ascending node) : 101.39303
            ω (Argument of perihelion)      : 236.56045
            M (Mean anomaly)                : 272.95053
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 157.55518
            B (Latitude of perihelion)      : -8.26786
            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
2026-07-17 00:00 UT   15 13 23.1   -10 37 58     2.605    3.166  114.5   17.0   109   12.2 
2026-07-17 04:23 UT   15 13 24.1   -10 38 45     2.607    3.165  114.4   17.0   109   12.2 
2026-07-18 00:00 UT   15 13 29.2   -10 42 19     2.617    3.165  113.6   17.1   109   12.2 
2026-07-19 00:00 UT   15 13 36.4   -10 46 44     2.629    3.164  112.7   17.2   108   12.3 
2026-07-20 00:00 UT   15 13 44.9   -10 51 13     2.640    3.163  111.9   17.3   108   12.3 
2026-07-21 00:00 UT   15 13 54.7   -10 55 45     2.652    3.162  111.0   17.5   108   12.3 
2026-07-22 00:00 UT   15 14 05.6   -11 00 22     2.664    3.161  110.1   17.6   108   12.3 
2026-07-23 00:00 UT   15 14 17.8   -11 05 02     2.676    3.159  109.2   17.7   108   12.3 
2026-07-24 00:00 UT   15 14 31.1   -11 09 46     2.688    3.158  108.3   17.8   108   12.3 
2026-07-25 00:00 UT   15 14 45.7   -11 14 33     2.700    3.157  107.5   17.9   107   12.3 
2026-07-26 00:00 UT   15 15 01.4   -11 19 23     2.712    3.156  106.6   18.0   107   12.3 
2026-07-27 00:00 UT   15 15 18.3   -11 24 17     2.724    3.155  105.8   18.0   107   12.4 
2026-07-28 00:00 UT   15 15 36.3   -11 29 14     2.737    3.154  104.9   18.1   107   12.4 
2026-07-29 00:00 UT   15 15 55.6   -11 34 14     2.749    3.153  104.1   18.2   107   12.4 
2026-07-30 00:00 UT   15 16 15.9   -11 39 17     2.762    3.152  103.2   18.3   107   12.4 
2026-07-31 00:00 UT   15 16 37.4   -11 44 23     2.774    3.151  102.4   18.3   107   12.4 
2026-08-01 00:00 UT   15 16 60.0   -11 49 32     2.786    3.150  101.5   18.4   106   12.4 
2026-08-02 00:00 UT   15 17 23.7   -11 54 43     2.799    3.149  100.7   18.5   106   12.4 
2026-08-03 00:00 UT   15 17 48.6   -11 59 58     2.812    3.148   99.9   18.5   106   12.4 
2026-08-04 00:00 UT   15 18 14.5   -12 05 14     2.824    3.147   99.0   18.6   106   12.4 
2026-08-05 00:00 UT   15 18 41.5   -12 10 34     2.837    3.146   98.2   18.6   106   12.5 
2026-08-06 00:00 UT   15 19 09.6   -12 15 56     2.849    3.145   97.4   18.7   106   12.5 
2026-08-07 00:00 UT   15 19 38.8   -12 21 20     2.862    3.144   96.6   18.7   106   12.5 
2026-08-08 00:00 UT   15 20 09.0   -12 26 46     2.875    3.143   95.8   18.7   105   12.5 
2026-08-09 00:00 UT   15 20 40.3   -12 32 15     2.888    3.142   95.0   18.8   105   12.5 
2026-08-10 00:00 UT   15 21 12.6   -12 37 46     2.900    3.141   94.2   18.8   105   12.5 
2026-08-11 00:00 UT   15 21 46.0   -12 43 18     2.913    3.140   93.4   18.8   105   12.5 
2026-08-12 00:00 UT   15 22 20.4   -12 48 53     2.926    3.139   92.6   18.8   105   12.5 
2026-08-13 00:00 UT   15 22 55.9   -12 54 30     2.939    3.138   91.8   18.8   105   12.5 
2026-08-14 00:00 UT   15 23 32.3   -13 00 08     2.952    3.137   91.0   18.8   105   12.5 
2026-08-15 00:00 UT   15 24 09.8   -13 05 48     2.965    3.136   90.2   18.8   105   12.6 
2026-08-16 00:00 UT   15 24 48.2   -13 11 30     2.977    3.135   89.4   18.8   104   12.6 

    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.