(312) Pierretta
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	18 Apr 2026	14.5	2.751 AU	3.690 AU	00h36m	+03°34'	17.8°	6.4°
Opposition	3 Nov 2026	13.2	3.048 AU	2.062 AU	02h27m	+22°44'	172.2°	2.5°

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 Pierretta are:

            e (Eccentricity)                : 0.1602749
            a (Semimajor axis)              : 2.7821489
            i (Inclination)                 : 9.03445
            Ω (Longitude of ascending node) : 6.19498
            ω (Argument of perihelion)      : 261.90134
            M (Mean anomaly)                : 45.42867
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 87.99596
            B (Latitude of perihelion)      : -8.94361
            P (Orbital period in years)     : 4.64            
        

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
2026-04-18 00:00 UT   00 36 34.6   +03 34 52     3.690    2.751   17.8    6.4   246   14.5 
2026-04-18 01:07 UT   00 36 38.7   +03 35 22     3.690    2.751   17.8    6.4   246   14.5 
2026-04-19 00:00 UT   00 38 02.5   +03 45 50     3.688    2.753   18.4    6.6   246   14.5 
2026-04-20 00:00 UT   00 39 30.4   +03 56 47     3.685    2.755   18.9    6.8   246   14.5 
2026-04-21 00:00 UT   00 40 58.0   +04 07 42     3.683    2.756   19.5    7.0   246   14.5 
2026-04-22 00:00 UT   00 42 25.5   +04 18 35     3.680    2.758   20.1    7.2   246   14.5 
2026-04-23 00:00 UT   00 43 52.8   +04 29 27     3.677    2.760   20.7    7.4   246   14.5 
2026-04-24 00:00 UT   00 45 20.0   +04 40 16     3.674    2.761   21.2    7.6   247   14.5 
2026-04-25 00:00 UT   00 46 47.0   +04 51 04     3.671    2.763   21.8    7.8   247   14.5 
2026-04-26 00:00 UT   00 48 13.8   +05 01 49     3.668    2.765   22.4    8.0   247   14.5 
2026-04-27 00:00 UT   00 49 40.5   +05 12 33     3.665    2.766   22.9    8.2   247   14.5 
2026-04-28 00:00 UT   00 51 07.0   +05 23 15     3.662    2.768   23.5    8.3   247   14.6 
2026-04-29 00:00 UT   00 52 33.3   +05 33 54     3.658    2.770   24.1    8.5   247   14.6 
2026-04-30 00:00 UT   00 53 59.4   +05 44 32     3.654    2.771   24.7    8.7   247   14.6 
2026-05-01 00:00 UT   00 55 25.4   +05 55 07     3.651    2.773   25.2    8.9   247   14.6 
2026-05-02 00:00 UT   00 56 51.2   +06 05 41     3.647    2.775   25.8    9.1   247   14.6 
2026-05-03 00:00 UT   00 58 16.8   +06 16 12     3.643    2.776   26.4    9.3   247   14.6 
2026-05-04 00:00 UT   00 59 42.2   +06 26 42     3.638    2.778   27.0    9.5   248   14.6 
2026-05-05 00:00 UT   01 01 07.4   +06 37 09     3.634    2.779   27.5    9.7   248   14.6 
2026-05-06 00:00 UT   01 02 32.5   +06 47 34     3.630    2.781   28.1    9.8   248   14.6 
2026-05-07 00:00 UT   01 03 57.4   +06 57 57     3.625    2.783   28.7   10.0   248   14.6 
2026-05-08 00:00 UT   01 05 22.1   +07 08 18     3.621    2.784   29.3   10.2   248   14.6 
2026-05-09 00:00 UT   01 06 46.6   +07 18 36     3.616    2.786   29.8   10.4   248   14.6 

    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.