(92) Undina
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	16 Aug 2026	12.6	3.135 AU	2.977 AU	15h24m	-13°11'	89.4°	18.8°
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
2026-08-16 00:00 UT   15 24 48.2   -13 11 30     2.977    3.135   89.4   18.8   104   12.6 
2026-08-16 12:07 UT   15 25 08.0   -13 14 23     2.984    3.135   89.0   18.8   104   12.6 
2026-08-17 00:00 UT   15 25 27.7   -13 17 13     2.990    3.134   88.6   18.8   104   12.6 
2026-08-18 00:00 UT   15 26 08.1   -13 22 58     3.003    3.133   87.9   18.8   104   12.6 
2026-08-19 00:00 UT   15 26 49.4   -13 28 44     3.016    3.132   87.1   18.8   104   12.6 
2026-08-20 00:00 UT   15 27 31.7   -13 34 31     3.029    3.131   86.3   18.8   104   12.6 
2026-08-21 00:00 UT   15 28 15.0   -13 40 19     3.041    3.130   85.6   18.8   104   12.6 
2026-08-22 00:00 UT   15 28 59.1   -13 46 08     3.054    3.129   84.8   18.8   104   12.6 
2026-08-23 00:00 UT   15 29 44.2   -13 51 59     3.067    3.128   84.0   18.8   104   12.6 
2026-08-24 00:00 UT   15 30 30.2   -13 57 50     3.080    3.127   83.3   18.7   103   12.6 
2026-08-25 00:00 UT   15 31 17.1   -14 03 42     3.092    3.126   82.5   18.7   103   12.6 
2026-08-26 00:00 UT   15 32 04.8   -14 09 35     3.105    3.125   81.8   18.7   103   12.6 
2026-08-27 00:00 UT   15 32 53.5   -14 15 29     3.118    3.124   81.0   18.6   103   12.6 
2026-08-28 00:00 UT   15 33 43.0   -14 21 23     3.131    3.123   80.3   18.6   103   12.6 
2026-08-29 00:00 UT   15 34 33.3   -14 27 18     3.143    3.122   79.5   18.5   103   12.7 
2026-08-30 00:00 UT   15 35 24.5   -14 33 13     3.156    3.121   78.8   18.5   103   12.7 
2026-08-31 00:00 UT   15 36 16.6   -14 39 08     3.168    3.120   78.1   18.5   103   12.7 
2026-09-01 00:00 UT   15 37 09.4   -14 45 04     3.181    3.119   77.3   18.4   102   12.7 
2026-09-02 00:00 UT   15 38 03.1   -14 51 01     3.193    3.118   76.6   18.3   102   12.7 
2026-09-03 00:00 UT   15 38 57.6   -14 56 57     3.206    3.117   75.9   18.3   102   12.7 
2026-09-04 00:00 UT   15 39 52.9   -15 02 54     3.218    3.116   75.1   18.2   102   12.7 
2026-09-05 00:00 UT   15 40 49.0   -15 08 50     3.230    3.115   74.4   18.2   102   12.7 
2026-09-06 00:00 UT   15 41 45.9   -15 14 47     3.243    3.114   73.7   18.1   102   12.7 
2026-09-07 00:00 UT   15 42 43.6   -15 20 43     3.255    3.113   73.0   18.0   102   12.7 
2026-09-08 00:00 UT   15 43 42.1   -15 26 40     3.267    3.112   72.3   18.0   102   12.7 
2026-09-09 00:00 UT   15 44 41.3   -15 32 36     3.279    3.111   71.5   17.9   101   12.7 
2026-09-10 00:00 UT   15 45 41.3   -15 38 32     3.292    3.110   70.8   17.8   101   12.7 
2026-09-11 00:00 UT   15 46 42.0   -15 44 28     3.304    3.109   70.1   17.7   101   12.7 
2026-09-12 00:00 UT   15 47 43.5   -15 50 23     3.316    3.108   69.4   17.6   101   12.7 
2026-09-13 00:00 UT   15 48 45.8   -15 56 17     3.328    3.107   68.7   17.6   101   12.7 
2026-09-14 00:00 UT   15 49 48.7   -16 02 12     3.339    3.106   68.0   17.5   101   12.7 
2026-09-15 00:00 UT   15 50 52.4   -16 08 05     3.351    3.105   67.3   17.4   101   12.7 

    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.