(313) Chaldaea
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	17 Mar 2026	14.7	2.687 AU	3.015 AU	19h40m	-11°03'	61.6°	19.0°
Opposition	24 Jul 2026	13.1	2.794 AU	1.800 AU	20h03m	-05°08'	165.0°	5.4°

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 Chaldaea are:

            e (Eccentricity)                : 0.1808338
            a (Semimajor axis)              : 2.3756468
            i (Inclination)                 : 11.64375
            Ω (Longitude of ascending node) : 176.53270
            ω (Argument of perihelion)      : 315.73423
            M (Mean anomaly)                : 98.13748
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 132.86222
            B (Latitude of perihelion)      : -8.09830
            P (Orbital period in years)     : 3.66            
        

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
2026-03-17 00:00 UT   19 40 14.3   -11 03 21     3.015    2.687   61.6   19.0   266   14.7 
2026-03-17 21:00 UT   19 41 22.3   -10 58 35     3.006    2.688   62.1   19.1   266   14.7 
2026-03-18 00:00 UT   19 41 31.9   -10 57 54     3.004    2.688   62.2   19.1   266   14.7 
2026-03-19 00:00 UT   19 42 48.9   -10 52 25     2.994    2.690   62.9   19.2   265   14.7 
2026-03-20 00:00 UT   19 44 05.2   -10 46 53     2.983    2.691   63.5   19.3   265   14.7 
2026-03-21 00:00 UT   19 45 20.8   -10 41 20     2.972    2.692   64.2   19.5   265   14.7 
2026-03-22 00:00 UT   19 46 35.7   -10 35 44     2.962    2.693   64.8   19.6   265   14.7 
2026-03-23 00:00 UT   19 47 49.8   -10 30 07     2.951    2.694   65.5   19.7   264   14.7 
2026-03-24 00:00 UT   19 49 03.3   -10 24 28     2.940    2.696   66.2   19.8   264   14.7 
2026-03-25 00:00 UT   19 50 16.0   -10 18 48     2.929    2.697   66.8   19.9   264   14.7 
2026-03-26 00:00 UT   19 51 28.0   -10 13 06     2.918    2.698   67.5   20.0   264   14.6 
2026-03-27 00:00 UT   19 52 39.2   -10 07 22     2.907    2.699   68.2   20.1   263   14.6 
2026-03-28 00:00 UT   19 53 49.7   -10 01 37     2.895    2.700   68.8   20.2   263   14.6 
2026-03-29 00:00 UT   19 54 59.5   -09 55 51     2.884    2.702   69.5   20.3   263   14.6 
2026-03-30 00:00 UT   19 56 08.5   -09 50 03     2.873    2.703   70.2   20.3   263   14.6 
2026-03-31 00:00 UT   19 57 16.7   -09 44 15     2.861    2.704   70.9   20.4   262   14.6 
2026-04-01 00:00 UT   19 58 24.1   -09 38 25     2.850    2.705   71.5   20.5   262   14.6 
2026-04-02 00:00 UT   19 59 30.7   -09 32 34     2.838    2.706   72.2   20.6   262   14.6 
2026-04-03 00:00 UT   20 00 36.6   -09 26 43     2.827    2.707   72.9   20.7   262   14.6 
2026-04-04 00:00 UT   20 01 41.6   -09 20 50     2.815    2.708   73.6   20.7   261   14.6 
2026-04-05 00:00 UT   20 02 45.8   -09 14 57     2.804    2.709   74.3   20.8   261   14.6 
2026-04-06 00:00 UT   20 03 49.3   -09 09 03     2.792    2.711   75.0   20.9   261   14.6 
2026-04-07 00:00 UT   20 04 51.8   -09 03 09     2.780    2.712   75.7   21.0   261   14.6 
2026-04-08 00:00 UT   20 05 53.5   -08 57 14     2.768    2.713   76.4   21.0   261   14.6 
2026-04-09 00:00 UT   20 06 54.4   -08 51 19     2.756    2.714   77.1   21.1   260   14.6 
2026-04-10 00:00 UT   20 07 54.4   -08 45 23     2.745    2.715   77.8   21.1   260   14.6 
2026-04-11 00:00 UT   20 08 53.5   -08 39 28     2.733    2.716   78.5   21.2   260   14.6 
2026-04-12 00:00 UT   20 09 51.8   -08 33 32     2.721    2.717   79.2   21.2   260   14.6 
2026-04-13 00:00 UT   20 10 49.1   -08 27 37     2.709    2.718   79.9   21.3   259   14.5 
2026-04-14 00:00 UT   20 11 45.5   -08 21 41     2.697    2.719   80.6   21.3   259   14.5 
2026-04-15 00:00 UT   20 12 41.0   -08 15 46     2.684    2.720   81.3   21.4   259   14.5 

    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.