(23) Thalia
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	27 Jun 2026	12.7	3.137 AU	2.776 AU	23h54m	-13°03'	101.3°	18.5°
Opposition	9 Sep 2026	11.5	3.036 AU	2.051 AU	23h37m	-18°35'	165.2°	4.9°

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 Thalia are:

            e (Eccentricity)                : 0.2313135
            a (Semimajor axis)              : 2.6286617
            i (Inclination)                 : 10.10773
            Ω (Longitude of ascending node) : 66.47956
            ω (Argument of perihelion)      : 61.67081
            M (Mean anomaly)                : 216.40252
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 127.77441
            B (Latitude of perihelion)      : 8.88670
            P (Orbital period in years)     : 4.26            
        

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
2026-06-27 00:00 UT   23 54 40.2   -13 03 27     2.776    3.137  101.3   18.5   248   12.7 
2026-06-27 04:41 UT   23 54 46.0   -13 03 33     2.773    3.137  101.4   18.5   248   12.7 
2026-06-28 00:00 UT   23 55 09.7   -13 04 03     2.761    3.136  102.1   18.5   249   12.7 
2026-06-29 00:00 UT   23 55 38.2   -13 04 48     2.747    3.135  102.9   18.4   249   12.7 
2026-06-30 00:00 UT   23 56 05.8   -13 05 39     2.732    3.134  103.8   18.4   249   12.7 
2026-07-01 00:00 UT   23 56 32.3   -13 06 39     2.718    3.132  104.6   18.3   249   12.7 
2026-07-02 00:00 UT   23 56 57.9   -13 07 46     2.703    3.131  105.4   18.2   249   12.7 
2026-07-03 00:00 UT   23 57 22.4   -13 09 01     2.689    3.130  106.3   18.2   250   12.6 
2026-07-04 00:00 UT   23 57 45.9   -13 10 23     2.675    3.129  107.1   18.1   250   12.6 
2026-07-05 00:00 UT   23 58 08.3   -13 11 54     2.661    3.128  108.0   18.0   250   12.6 
2026-07-06 00:00 UT   23 58 29.6   -13 13 32     2.646    3.127  108.8   17.9   250   12.6 
2026-07-07 00:00 UT   23 58 49.9   -13 15 18     2.632    3.125  109.7   17.8   250   12.6 
2026-07-08 00:00 UT   23 59 09.0   -13 17 13     2.618    3.124  110.6   17.7   251   12.6 
2026-07-09 00:00 UT   23 59 27.1   -13 19 15     2.604    3.123  111.4   17.6   251   12.5 
2026-07-10 00:00 UT   23 59 44.0   -13 21 25     2.591    3.122  112.3   17.5   251   12.5 
2026-07-11 00:00 UT   23 59 59.8   -13 23 43     2.577    3.121  113.2   17.4   251   12.5 
2026-07-12 00:00 UT   00 00 14.4   -13 26 10     2.563    3.119  114.1   17.3   252   12.5 
2026-07-13 00:00 UT   00 00 27.8   -13 28 44     2.550    3.118  115.0   17.2   252   12.5 
2026-07-14 00:00 UT   00 00 40.0   -13 31 27     2.536    3.117  115.9   17.1   252   12.5 
2026-07-15 00:00 UT   00 00 51.1   -13 34 17     2.523    3.116  116.8   16.9   252   12.4 
2026-07-16 00:00 UT   00 01 00.9   -13 37 15     2.509    3.114  117.7   16.8   253   12.4 
2026-07-17 00:00 UT   00 01 09.5   -13 40 22     2.496    3.113  118.6   16.7   253   12.4 
2026-07-18 00:00 UT   00 01 16.8   -13 43 36     2.483    3.112  119.5   16.5   253   12.4 
2026-07-19 00:00 UT   00 01 23.0   -13 46 58     2.470    3.111  120.4   16.4   254   12.4 
2026-07-20 00:00 UT   00 01 27.8   -13 50 28     2.457    3.109  121.3   16.2   254   12.4 
2026-07-21 00:00 UT   00 01 31.4   -13 54 05     2.445    3.108  122.2   16.1   254   12.3 
2026-07-22 00:00 UT   00 01 33.8   -13 57 50     2.432    3.107  123.2   15.9   255   12.3 
2026-07-23 00:00 UT   00 01 34.9   -14 01 42     2.420    3.105  124.1   15.7   255   12.3 
2026-07-24 00:00 UT   00 01 34.6   -14 05 42     2.407    3.104  125.0   15.5   255   12.3 
2026-07-25 00:00 UT   00 01 33.1   -14 09 50     2.395    3.103  126.0   15.4   256   12.3 
2026-07-26 00:00 UT   00 01 30.3   -14 14 04     2.383    3.102  126.9   15.2   256   12.3 
2026-07-27 00:00 UT   00 01 26.2   -14 18 26     2.371    3.100  127.9   15.0   256   12.2 

    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.