(118) Peitho
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	16 May 2026	14.2	2.580 AU	2.713 AU	23h09m	-13°20'	71.7°	21.8°
Opposition	14 Sep 2026	11.9	2.369 AU	1.374 AU	23h47m	-13°28'	168.8°	4.7°

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 Peitho are:

            e (Eccentricity)                : 0.1633907
            a (Semimajor axis)              : 2.4378880
            i (Inclination)                 : 7.74652
            Ω (Longitude of ascending node) : 47.63437
            ω (Argument of perihelion)      : 33.09673
            M (Mean anomaly)                : 212.20809
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 80.49126
            B (Latitude of perihelion)      : 4.22096
            P (Orbital period in years)     : 3.81            
        

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
2026-05-16 00:00 UT   23 09 57.2   -13 20 49     2.713    2.580   71.7   21.8   245   14.2 
2026-05-16 10:36 UT   23 10 31.7   -13 18 07     2.707    2.580   71.9   21.9   245   14.2 
2026-05-17 00:00 UT   23 11 15.2   -13 14 44     2.700    2.579   72.3   21.9   245   14.2 
2026-05-18 00:00 UT   23 12 32.7   -13 08 44     2.686    2.577   72.9   22.0   245   14.2 
2026-05-19 00:00 UT   23 13 49.6   -13 02 46     2.672    2.576   73.5   22.1   245   14.2 
2026-05-20 00:00 UT   23 15 06.1   -12 56 52     2.659    2.574   74.2   22.2   245   14.2 
2026-05-21 00:00 UT   23 16 22.0   -12 51 02     2.645    2.572   74.8   22.3   245   14.2 
2026-05-22 00:00 UT   23 17 37.3   -12 45 16     2.631    2.571   75.4   22.4   245   14.1 
2026-05-23 00:00 UT   23 18 52.1   -12 39 34     2.617    2.569   76.1   22.5   245   14.1 
2026-05-24 00:00 UT   23 20 06.4   -12 33 55     2.603    2.568   76.7   22.6   245   14.1 
2026-05-25 00:00 UT   23 21 20.1   -12 28 20     2.590    2.566   77.4   22.7   245   14.1 
2026-05-26 00:00 UT   23 22 33.3   -12 22 50     2.576    2.564   78.0   22.7   245   14.1 
2026-05-27 00:00 UT   23 23 45.8   -12 17 24     2.562    2.563   78.7   22.8   245   14.1 
2026-05-28 00:00 UT   23 24 57.8   -12 12 02     2.548    2.561   79.3   22.9   245   14.1 
2026-05-29 00:00 UT   23 26 09.2   -12 06 44     2.534    2.559   80.0   22.9   245   14.1 
2026-05-30 00:00 UT   23 27 20.0   -12 01 30     2.520    2.558   80.6   23.0   245   14.1 
2026-05-31 00:00 UT   23 28 30.2   -11 56 21     2.506    2.556   81.3   23.1   245   14.0 
2026-06-01 00:00 UT   23 29 39.8   -11 51 17     2.492    2.555   81.9   23.1   245   14.0 
2026-06-02 00:00 UT   23 30 48.7   -11 46 18     2.478    2.553   82.6   23.2   245   14.0 
2026-06-03 00:00 UT   23 31 57.1   -11 41 23     2.464    2.551   83.2   23.3   246   14.0 
2026-06-04 00:00 UT   23 33 04.7   -11 36 33     2.450    2.550   83.9   23.3   246   14.0 
2026-06-05 00:00 UT   23 34 11.8   -11 31 48     2.435    2.548   84.6   23.4   246   14.0 
2026-06-06 00:00 UT   23 35 18.1   -11 27 08     2.421    2.546   85.2   23.4   246   14.0 
2026-06-07 00:00 UT   23 36 23.8   -11 22 33     2.407    2.545   85.9   23.4   246   14.0 
2026-06-08 00:00 UT   23 37 28.8   -11 18 04     2.393    2.543   86.6   23.5   246   13.9 
2026-06-09 00:00 UT   23 38 33.0   -11 13 40     2.379    2.541   87.3   23.5   246   13.9 
2026-06-10 00:00 UT   23 39 36.6   -11 09 22     2.365    2.540   87.9   23.5   246   13.9 
2026-06-11 00:00 UT   23 40 39.4   -11 05 09     2.351    2.538   88.6   23.6   246   13.9 
2026-06-12 00:00 UT   23 41 41.5   -11 01 02     2.337    2.536   89.3   23.6   246   13.9 
2026-06-13 00:00 UT   23 42 42.8   -10 57 01     2.322    2.535   90.0   23.6   246   13.9 

    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.