(92) Undina
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	23 Apr 2024	13.1	3.447 AU	3.587 AU	07h15m	+25°54'	73.9°	16.3°
Opposition	9 Mar 2025	11.9	3.512 AU	2.537 AU	11h40m	+16°04'	167.2°	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)                : 0.1052342
            a (Semimajor axis)              : 3.1843386
            i (Inclination)                 : 9.92356
            Ω (Longitude of ascending node) : 101.39563
            ω (Argument of perihelion)      : 236.90671
            M (Mean anomaly)                : 133.84408
            Epoch                           : 2024 Mar 31

            L (Longitude of perihelion)     : 157.90606
            B (Latitude of perihelion)      : -8.30130
            P (Orbital period in years)     : 5.68            
        

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. A more printer-friendly version of the same chart can be found below.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2024-04-23 00:00 UT   07 15 10.7   +25 54 52     3.587    3.447   73.9   16.3    96   13.1 
2024-04-23 07:50 UT   07 15 28.8   +25 54 31     3.592    3.447   73.7   16.3    96   13.1 
2024-04-24 00:00 UT   07 16 06.4   +25 53 46     3.602    3.447   73.1   16.2    96   13.1 
2024-04-25 00:00 UT   07 17 02.7   +25 52 37     3.616    3.448   72.4   16.1    96   13.1 
2024-04-26 00:00 UT   07 17 59.7   +25 51 25     3.631    3.449   71.6   16.1    96   13.1 
2024-04-27 00:00 UT   07 18 57.3   +25 50 11     3.645    3.449   70.9   16.0    96   13.1 
2024-04-28 00:00 UT   07 19 55.6   +25 48 55     3.659    3.450   70.1   15.9    97   13.2 
2024-04-29 00:00 UT   07 20 54.5   +25 47 36     3.674    3.450   69.4   15.9    97   13.2 
2024-04-30 00:00 UT   07 21 54.1   +25 46 14     3.688    3.451   68.6   15.8    97   13.2 
2024-05-01 00:00 UT   07 22 54.2   +25 44 50     3.702    3.451   67.9   15.7    97   13.2 
2024-05-02 00:00 UT   07 23 55.0   +25 43 23     3.716    3.452   67.2   15.6    97   13.2 
2024-05-03 00:00 UT   07 24 56.3   +25 41 54     3.730    3.453   66.4   15.5    97   13.2 
2024-05-04 00:00 UT   07 25 58.2   +25 40 21     3.744    3.453   65.7   15.4    97   13.2 
2024-05-05 00:00 UT   07 27 00.7   +25 38 47     3.758    3.454   65.0   15.3    97   13.2 
2024-05-06 00:00 UT   07 28 03.7   +25 37 09     3.771    3.454   64.2   15.2    97   13.2 
2024-05-07 00:00 UT   07 29 07.3   +25 35 29     3.785    3.455   63.5   15.2    97   13.2 
2024-05-08 00:00 UT   07 30 11.4   +25 33 46     3.798    3.455   62.8   15.1    97   13.2 
2024-05-09 00:00 UT   07 31 16.0   +25 32 01     3.812    3.456   62.1   15.0    97   13.2 
2024-05-10 00:00 UT   07 32 21.1   +25 30 13     3.825    3.456   61.3   14.9    97   13.2 
2024-05-11 00:00 UT   07 33 26.8   +25 28 22     3.839    3.457   60.6   14.7    97   13.2 
2024-05-12 00:00 UT   07 34 32.9   +25 26 29     3.852    3.458   59.9   14.6    97   13.2 
2024-05-13 00:00 UT   07 35 39.5   +25 24 33     3.865    3.458   59.2   14.5    97   13.2 
2024-05-14 00:00 UT   07 36 46.5   +25 22 34     3.878    3.459   58.5   14.4    97   13.2 
2024-05-15 00:00 UT   07 37 54.1   +25 20 32     3.891    3.459   57.8   14.3    97   13.2 
2024-05-16 00:00 UT   07 39 02.0   +25 18 28     3.903    3.460   57.1   14.2    97   13.2 
2024-05-17 00:00 UT   07 40 10.4   +25 16 21     3.916    3.460   56.4   14.1    97   13.2 
2024-05-18 00:00 UT   07 41 19.2   +25 14 12     3.929    3.461   55.7   14.0    97   13.2 
2024-05-19 00:00 UT   07 42 28.4   +25 11 59     3.941    3.461   55.0   13.9    97   13.2 
2024-05-20 00:00 UT   07 43 38.0   +25 09 44     3.953    3.462   54.3   13.7    97   13.2 
2024-05-21 00:00 UT   07 44 48.0   +25 07 27     3.966    3.462   53.6   13.6    97   13.3 
2024-05-22 00:00 UT   07 45 58.3   +25 05 06     3.978    3.463   52.9   13.5    97   13.3 
2024-05-23 00:00 UT   07 47 09.1   +25 02 43     3.990    3.463   52.2   13.4    97   13.3 

    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.