(92) Undina
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	6 Apr 2026	12.1	3.267 AU	2.496 AU	16h05m	-10°14'	133.5°	12.8°
Opposition	16 May 2026	11.3	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)              : 3.1854746
            i (Inclination)                 : 9.92326
            Ω (Longitude of ascending node) : 101.39207
            ω (Argument of perihelion)      : 236.68467
            M (Mean anomaly)                : 238.16042
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 157.67916
            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
2026-04-06 00:00 UT   16 05 36.5   -10 14 37     2.496    3.267  133.5   12.8   271   12.1 
2026-04-06 01:04 UT   16 05 35.9   -10 14 31     2.496    3.267  133.6   12.8   271   12.1 
2026-04-07 00:00 UT   16 05 22.7   -10 12 38     2.485    3.266  134.5   12.6   271   12.0 
2026-04-08 00:00 UT   16 05 07.6   -10 10 38     2.474    3.265  135.6   12.4   270   12.0 
2026-04-09 00:00 UT   16 04 51.2   -10 08 37     2.463    3.264  136.6   12.2   270   12.0 
2026-04-10 00:00 UT   16 04 33.6   -10 06 35     2.453    3.263  137.6   11.9   270   12.0 
2026-04-11 00:00 UT   16 04 14.8   -10 04 31     2.442    3.262  138.6   11.7   269   12.0 
2026-04-12 00:00 UT   16 03 54.6   -10 02 27     2.432    3.261  139.6   11.5   269   11.9 
2026-04-13 00:00 UT   16 03 33.3   -10 00 22     2.422    3.260  140.7   11.2   268   11.9 
2026-04-14 00:00 UT   16 03 10.7   -09 58 17     2.412    3.259  141.7   11.0   268   11.9 
2026-04-15 00:00 UT   16 02 46.9   -09 56 10     2.403    3.258  142.7   10.7   267   11.9 
2026-04-16 00:00 UT   16 02 21.9   -09 54 04     2.393    3.257  143.8   10.5   267   11.9 
2026-04-17 00:00 UT   16 01 55.7   -09 51 57     2.384    3.256  144.8   10.2   266   11.8 
2026-04-18 00:00 UT   16 01 28.4   -09 49 50     2.375    3.255  145.8   10.0   266   11.8 
2026-04-19 00:00 UT   16 00 59.9   -09 47 43     2.367    3.254  146.9    9.7   265   11.8 
2026-04-20 00:00 UT   16 00 30.3   -09 45 36     2.358    3.253  147.9    9.4   264   11.8 
2026-04-21 00:00 UT   15 59 59.6   -09 43 29     2.350    3.252  148.9    9.2   264   11.8 
2026-04-22 00:00 UT   15 59 27.8   -09 41 23     2.342    3.251  150.0    8.9   263   11.8 
2026-04-23 00:00 UT   15 58 55.0   -09 39 18     2.334    3.250  151.0    8.6   262   11.7 
2026-04-24 00:00 UT   15 58 21.2   -09 37 13     2.327    3.249  152.0    8.3   261   11.7 
2026-04-25 00:00 UT   15 57 46.3   -09 35 09     2.320    3.248  153.1    8.1   260   11.7 
2026-04-26 00:00 UT   15 57 10.6   -09 33 07     2.313    3.247  154.1    7.8   259   11.7 
2026-04-27 00:00 UT   15 56 33.8   -09 31 05     2.306    3.247  155.1    7.5   258   11.7 
2026-04-28 00:00 UT   15 55 56.2   -09 29 05     2.299    3.246  156.1    7.2   257   11.6 
2026-04-29 00:00 UT   15 55 17.7   -09 27 06     2.293    3.245  157.1    6.9   256   11.6 
2026-04-30 00:00 UT   15 54 38.4   -09 25 08     2.287    3.244  158.1    6.6   254   11.6 
2026-05-01 00:00 UT   15 53 58.2   -09 23 13     2.282    3.243  159.1    6.4   253   11.6 
2026-05-02 00:00 UT   15 53 17.3   -09 21 19     2.276    3.242  160.1    6.1   251   11.6 
2026-05-03 00:00 UT   15 52 35.7   -09 19 27     2.271    3.241  161.0    5.8   249   11.5 
2026-05-04 00:00 UT   15 51 53.3   -09 17 37     2.266    3.240  162.0    5.5   247   11.5 
2026-05-05 00:00 UT   15 51 10.3   -09 15 50     2.261    3.239  162.9    5.3   245   11.5 
2026-05-06 00:00 UT   15 50 26.6   -09 14 05     2.257    3.238  163.8    5.0   242   11.5 

    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.