(115) Thyra
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	20 May 2025	12.3	2.596 AU	1.937 AU	20h09m	-28°07'	120.0°	19.7°
Opposition	13 Jul 2025	10.9	2.494 AU	1.481 AU	19h36m	-27°39'	174.0°	2.4°

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 Thyra are:

            e (Eccentricity)                : 0.1924085
            a (Semimajor axis)              : 2.3803080
            i (Inclination)                 : 11.58661
            Ω (Longitude of ascending node) : 308.75115
            ω (Argument of perihelion)      : 96.96772
            M (Mean anomaly)                : 247.63857
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 225.86234
            B (Latitude of perihelion)      : 11.49987
            P (Orbital period in years)     : 3.67            
        

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
2025-05-20 00:00 UT   20 09 56.0   -28 07 11     1.937    2.596  120.0   19.7   262   12.3 
2025-05-20 20:20 UT   20 10 04.6   -28 06 33     1.926    2.594  120.8   19.6   262   12.2 
2025-05-21 00:00 UT   20 10 06.0   -28 06 26     1.924    2.594  120.9   19.6   262   12.2 
2025-05-22 00:00 UT   20 10 14.2   -28 05 43     1.911    2.592  121.8   19.4   262   12.2 
2025-05-23 00:00 UT   20 10 20.7   -28 05 03     1.899    2.591  122.8   19.2   263   12.2 
2025-05-24 00:00 UT   20 10 25.4   -28 04 26     1.886    2.589  123.7   19.0   263   12.2 
2025-05-25 00:00 UT   20 10 28.3   -28 03 52     1.874    2.587  124.6   18.8   263   12.1 
2025-05-26 00:00 UT   20 10 29.3   -28 03 20     1.861    2.585  125.6   18.6   263   12.1 
2025-05-27 00:00 UT   20 10 28.5   -28 02 51     1.849    2.583  126.5   18.4   263   12.1 
2025-05-28 00:00 UT   20 10 25.9   -28 02 24     1.837    2.582  127.5   18.1   264   12.1 
2025-05-29 00:00 UT   20 10 21.4   -28 02 00     1.825    2.580  128.4   17.9   264   12.1 
2025-05-30 00:00 UT   20 10 15.0   -28 01 38     1.813    2.578  129.4   17.7   264   12.0 
2025-05-31 00:00 UT   20 10 06.7   -28 01 18     1.801    2.576  130.4   17.4   264   12.0 
2025-06-01 00:00 UT   20 09 56.5   -28 01 00     1.789    2.575  131.4   17.2   264   12.0 
2025-06-02 00:00 UT   20 09 44.4   -28 00 45     1.778    2.573  132.4   16.9   265   12.0 
2025-06-03 00:00 UT   20 09 30.5   -28 00 31     1.767    2.571  133.3   16.7   265   11.9 
2025-06-04 00:00 UT   20 09 14.6   -28 00 19     1.756    2.569  134.3   16.4   265   11.9 
2025-06-05 00:00 UT   20 08 56.8   -28 00 08     1.745    2.567  135.3   16.1   265   11.9 
2025-06-06 00:00 UT   20 08 37.1   -27 59 59     1.734    2.566  136.4   15.8   266   11.9 
2025-06-07 00:00 UT   20 08 15.5   -27 59 51     1.723    2.564  137.4   15.5   266   11.8 
2025-06-08 00:00 UT   20 07 52.0   -27 59 44     1.713    2.562  138.4   15.2   266   11.8 
2025-06-09 00:00 UT   20 07 26.6   -27 59 38     1.702    2.560  139.4   14.9   267   11.8 
2025-06-10 00:00 UT   20 06 59.3   -27 59 33     1.692    2.558  140.5   14.6   267   11.8 
2025-06-11 00:00 UT   20 06 30.1   -27 59 29     1.682    2.556  141.5   14.3   267   11.7 
2025-06-12 00:00 UT   20 05 59.0   -27 59 25     1.673    2.555  142.6   14.0   268   11.7 
2025-06-13 00:00 UT   20 05 26.0   -27 59 21     1.663    2.553  143.6   13.7   268   11.7 
2025-06-14 00:00 UT   20 04 51.1   -27 59 18     1.654    2.551  144.7   13.3   269   11.7 
2025-06-15 00:00 UT   20 04 14.4   -27 59 14     1.645    2.549  145.7   13.0   269   11.6 
2025-06-16 00:00 UT   20 03 35.8   -27 59 09     1.636    2.547  146.8   12.6   270   11.6 
2025-06-17 00:00 UT   20 02 55.4   -27 59 05     1.627    2.545  147.9   12.3   270   11.6 
2025-06-18 00:00 UT   20 02 13.2   -27 58 59     1.618    2.543  149.0   11.9   271   11.6 
2025-06-19 00:00 UT   20 01 29.2   -27 58 52     1.610    2.541  150.0   11.5   271   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.