(312) Pierretta
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	22 Mar 2026	14.1	2.706 AU	3.701 AU	23h56m	-01°30'	2.7°	1.0°
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
2026-03-22 00:00 UT   23 56 07.1   -01 30 25     3.701    2.706    2.7    1.0   225   14.1 
2026-03-22 09:19 UT   23 56 42.7   -01 25 56     3.701    2.707    2.9    1.1   227   14.1 
2026-03-23 00:00 UT   23 57 38.7   -01 18 52     3.702    2.708    3.2    1.2   229   14.1 
2026-03-24 00:00 UT   23 59 10.2   -01 07 20     3.703    2.709    3.8    1.4   232   14.1 
2026-03-25 00:00 UT   00 00 41.5   +00 55 48     3.704    2.711    4.3    1.6   234   14.2 
2026-03-26 00:00 UT   00 02 12.7   +00 44 18     3.705    2.713    4.9    1.8   236   14.2 
2026-03-27 00:00 UT   00 03 43.8   +00 32 48     3.706    2.714    5.4    2.0   237   14.2 
2026-03-28 00:00 UT   00 05 14.8   +00 21 20     3.707    2.716    6.0    2.2   238   14.2 
2026-03-29 00:00 UT   00 06 45.6   +00 09 53     3.707    2.718    6.5    2.4   239   14.2 
2026-03-30 00:00 UT   00 08 16.3   +00 01 34     3.708    2.719    7.1    2.6   240   14.2 
2026-03-31 00:00 UT   00 09 46.9   +00 12 59     3.708    2.721    7.6    2.8   241   14.3 
2026-04-01 00:00 UT   00 11 17.3   +00 24 23     3.708    2.723    8.2    3.0   241   14.3 
2026-04-02 00:00 UT   00 12 47.7   +00 35 46     3.708    2.724    8.8    3.2   242   14.3 
2026-04-03 00:00 UT   00 14 17.8   +00 47 07     3.708    2.726    9.3    3.4   242   14.3 
2026-04-04 00:00 UT   00 15 47.9   +00 58 28     3.708    2.728    9.9    3.6   243   14.3 
2026-04-05 00:00 UT   00 17 17.8   +01 09 47     3.707    2.730   10.4    3.8   243   14.3 
2026-04-06 00:00 UT   00 18 47.6   +01 21 05     3.707    2.731   11.0    4.0   243   14.3 
2026-04-07 00:00 UT   00 20 17.3   +01 32 22     3.706    2.733   11.6    4.2   244   14.4 
2026-04-08 00:00 UT   00 21 46.8   +01 43 37     3.705    2.735   12.1    4.4   244   14.4 
2026-04-09 00:00 UT   00 23 16.2   +01 54 52     3.704    2.736   12.7    4.6   244   14.4 
2026-04-10 00:00 UT   00 24 45.5   +02 06 04     3.703    2.738   13.3    4.8   244   14.4 
2026-04-11 00:00 UT   00 26 14.6   +02 17 16     3.702    2.740   13.8    5.0   245   14.4 

    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.