(312) Pierretta
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	2 Mar 2024	12.8	2.838 AU	1.850 AU	11h03m	+12°13'	174.3°	2.0°
Today	19 Apr 2024	13.7	2.760 AU	2.053 AU	10h30m	+12°36'	125.5°	17.2°

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)                : 0.1602742
            a (Semimajor axis)              : 2.7816843
            i (Inclination)                 : 9.03561
            Ω (Longitude of ascending node) : 6.20719
            ω (Argument of perihelion)      : 262.04444
            M (Mean anomaly)                : 277.86714
            Epoch                           : 2024 Mar 31

            L (Longitude of perihelion)     : 88.15297
            B (Latitude of perihelion)      : -8.94793
            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. A more printer-friendly version of the same chart can be found below.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2024-04-19 00:00 UT   10 30 39.6   +12 36 32     2.053    2.760  125.5   17.2   114   13.7 
2024-04-19 02:33 UT   10 30 38.4   +12 36 15     2.054    2.760  125.4   17.2   114   13.7 
2024-04-20 00:00 UT   10 30 28.9   +12 33 47     2.062    2.759  124.5   17.5   114   13.7 
2024-04-21 00:00 UT   10 30 19.6   +12 30 54     2.072    2.757  123.5   17.7   114   13.7 
2024-04-22 00:00 UT   10 30 11.9   +12 27 54     2.081    2.755  122.6   17.9   113   13.7 
2024-04-23 00:00 UT   10 30 05.7   +12 24 46     2.091    2.754  121.6   18.1   113   13.7 
2024-04-24 00:00 UT   10 30 01.0   +12 21 31     2.100    2.752  120.6   18.3   113   13.8 
2024-04-25 00:00 UT   10 29 57.8   +12 18 08     2.110    2.750  119.7   18.5   113   13.8 
2024-04-26 00:00 UT   10 29 56.1   +12 14 38     2.120    2.749  118.7   18.7   113   13.8 
2024-04-27 00:00 UT   10 29 55.9   +12 11 00     2.130    2.747  117.7   18.9   113   13.8 
2024-04-28 00:00 UT   10 29 57.2   +12 07 16     2.140    2.745  116.8   19.1   113   13.8 
2024-04-29 00:00 UT   10 29 60.0   +12 03 25     2.150    2.744  115.9   19.3   113   13.8 
2024-04-30 00:00 UT   10 30 04.2   +11 59 26     2.161    2.742  114.9   19.5   113   13.8 
2024-05-01 00:00 UT   10 30 09.8   +11 55 21     2.171    2.740  114.0   19.6   113   13.9 
2024-05-02 00:00 UT   10 30 16.9   +11 51 09     2.182    2.739  113.1   19.8   113   13.9 
2024-05-03 00:00 UT   10 30 25.5   +11 46 50     2.192    2.737  112.2   19.9   113   13.9 
2024-05-04 00:00 UT   10 30 35.5   +11 42 24     2.203    2.735  111.3   20.1   112   13.9 
2024-05-05 00:00 UT   10 30 46.8   +11 37 52     2.214    2.734  110.4   20.2   112   13.9 
2024-05-06 00:00 UT   10 30 59.6   +11 33 13     2.224    2.732  109.5   20.4   112   13.9 
2024-05-07 00:00 UT   10 31 13.8   +11 28 28     2.235    2.730  108.6   20.5   112   13.9 
2024-05-08 00:00 UT   10 31 29.3   +11 23 36     2.246    2.729  107.7   20.6   112   14.0 
2024-05-09 00:00 UT   10 31 46.2   +11 18 38     2.257    2.727  106.9   20.7   112   14.0 
2024-05-10 00:00 UT   10 32 04.4   +11 13 34     2.268    2.725  106.0   20.9   112   14.0 
2024-05-11 00:00 UT   10 32 24.0   +11 08 23     2.279    2.724  105.1   21.0   112   14.0 
2024-05-12 00:00 UT   10 32 44.9   +11 03 06     2.291    2.722  104.3   21.1   112   14.0 
2024-05-13 00:00 UT   10 33 07.0   +10 57 43     2.302    2.720  103.4   21.2   112   14.0 
2024-05-14 00:00 UT   10 33 30.5   +10 52 14     2.313    2.719  102.6   21.3   112   14.0 
2024-05-15 00:00 UT   10 33 55.2   +10 46 40     2.324    2.717  101.8   21.4   112   14.0 
2024-05-16 00:00 UT   10 34 21.1   +10 40 59     2.336    2.715  100.9   21.4   112   14.1 
2024-05-17 00:00 UT   10 34 48.3   +10 35 13     2.347    2.714  100.1   21.5   112   14.1 
2024-05-18 00:00 UT   10 35 16.7   +10 29 21     2.358    2.712   99.3   21.6   112   14.1 
2024-05-19 00:00 UT   10 35 46.3   +10 23 23     2.370    2.710   98.5   21.7   112   14.1 

    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.