(747) Winchester
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	2 Nov 2026	13.3	2.565 AU	2.776 AU	10h15m	+11°21'	67.4°	20.9°
Opposition	22 Feb 2027	12.2	2.963 AU	1.988 AU	10h40m	+20°57'	168.4°	3.9°

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 Winchester are:

            e (Eccentricity)                : 0.3397865
            a (Semimajor axis)              : 2.9993934
            i (Inclination)                 : 18.22156
            Ω (Longitude of ascending node) : 129.04852
            ω (Argument of perihelion)      : 277.66406
            M (Mean anomaly)                : 19.46597
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 47.11200
            B (Latitude of perihelion)      : -18.05315
            P (Orbital period in years)     : 5.19            
        

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
2026-11-02 00:00 UT   10 15 51.2   +11 21 14     2.776    2.565   67.4   20.9   291   13.3 
2026-11-02 23:50 UT   10 17 06.7   +11 18 48     2.767    2.569   68.1   21.0   291   13.3 
2026-11-03 00:00 UT   10 17 07.2   +11 18 47     2.767    2.569   68.1   21.0   291   13.3 
2026-11-04 00:00 UT   10 18 22.5   +11 16 26     2.758    2.572   68.8   21.1   291   13.3 
2026-11-05 00:00 UT   10 19 37.0   +11 14 09     2.749    2.576   69.5   21.1   291   13.3 
2026-11-06 00:00 UT   10 20 50.7   +11 11 58     2.740    2.579   70.3   21.2   291   13.3 
2026-11-07 00:00 UT   10 22 03.7   +11 09 53     2.730    2.583   71.0   21.3   292   13.3 
2026-11-08 00:00 UT   10 23 15.8   +11 07 52     2.721    2.587   71.7   21.3   292   13.3 
2026-11-09 00:00 UT   10 24 27.1   +11 05 58     2.711    2.590   72.4   21.4   292   13.3 
2026-11-10 00:00 UT   10 25 37.6   +11 04 09     2.702    2.594   73.1   21.4   292   13.3 
2026-11-11 00:00 UT   10 26 47.2   +11 02 27     2.692    2.597   73.9   21.5   292   13.3 
2026-11-12 00:00 UT   10 27 56.0   +11 00 50     2.682    2.601   74.6   21.5   292   13.3 
2026-11-13 00:00 UT   10 29 04.0   +10 59 20     2.673    2.604   75.3   21.6   292   13.3 
2026-11-14 00:00 UT   10 30 11.0   +10 57 56     2.663    2.608   76.1   21.6   292   13.3 
2026-11-15 00:00 UT   10 31 17.2   +10 56 39     2.653    2.612   76.8   21.6   292   13.3 
2026-11-16 00:00 UT   10 32 22.5   +10 55 29     2.643    2.615   77.6   21.7   292   13.3 
2026-11-17 00:00 UT   10 33 27.0   +10 54 25     2.633    2.619   78.3   21.7   292   13.3 
2026-11-18 00:00 UT   10 34 30.5   +10 53 28     2.623    2.622   79.1   21.7   292   13.3 
2026-11-19 00:00 UT   10 35 33.1   +10 52 39     2.613    2.626   79.9   21.7   292   13.3 
2026-11-20 00:00 UT   10 36 34.7   +10 51 56     2.603    2.630   80.6   21.8   292   13.3 
2026-11-21 00:00 UT   10 37 35.5   +10 51 22     2.593    2.633   81.4   21.8   292   13.3 
2026-11-22 00:00 UT   10 38 35.2   +10 50 54     2.583    2.637   82.2   21.8   292   13.3 
2026-11-23 00:00 UT   10 39 34.1   +10 50 34     2.573    2.640   83.0   21.8   292   13.2 
2026-11-24 00:00 UT   10 40 31.9   +10 50 22     2.562    2.644   83.8   21.8   292   13.2 
2026-11-25 00:00 UT   10 41 28.8   +10 50 18     2.552    2.648   84.6   21.8   292   13.2 
2026-11-26 00:00 UT   10 42 24.7   +10 50 22     2.542    2.651   85.4   21.8   292   13.2 
2026-11-27 00:00 UT   10 43 19.5   +10 50 34     2.531    2.655   86.2   21.8   292   13.2 
2026-11-28 00:00 UT   10 44 13.4   +10 50 55     2.521    2.658   87.0   21.8   292   13.2 
2026-11-29 00:00 UT   10 45 06.2   +10 51 24     2.511    2.662   87.8   21.7   292   13.2 
2026-11-30 00:00 UT   10 45 58.0   +10 52 02     2.500    2.665   88.6   21.7   292   13.2 
2026-12-01 00:00 UT   10 46 48.7   +10 52 48     2.490    2.669   89.4   21.7   292   13.2 
2026-12-02 00:00 UT   10 47 38.3   +10 53 44     2.480    2.673   90.3   21.7   292   13.2 

    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.