(747) Winchester |
ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
Opposition | 2 Sep 2025 | 11.0 | 2.318 AU | 1.335 AU | 23h17m | -23°10' | 162.8° | 7.4° |
Today | 10 Oct 2025 | 11.4 | 2.203 AU | 1.393 AU | 22h55m | -28°54' | 133.5° | 19.2° |
(747) Winchester - 2025-10-10
astro.vanbuitenen.nl
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) : 0.3396931
a (Semimajor axis) : 2.9989620
i (Inclination) : 18.22142
Ω (Longitude of ascending node) : 129.04941
ω (Argument of perihelion) : 277.64614
M (Mean anomaly) : 341.52272
Epoch : 2025 Nov 21
L (Longitude of perihelion) : 47.09405
B (Latitude of perihelion) : -18.05380
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.
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
2025-10-10 00:00 UT 22 55 58.8 -28 54 18 1.393 2.203 133.5 19.2 45 11.4
2025-10-10 04:45 UT 22 55 55.6 -28 54 50 1.394 2.202 133.3 19.3 45 11.4
2025-10-11 00:00 UT 22 55 43.2 -28 56 51 1.398 2.200 132.6 19.5 46 11.5
2025-10-12 00:00 UT 22 55 29.4 -28 59 03 1.403 2.197 131.6 19.9 47 11.5
2025-10-13 00:00 UT 22 55 17.2 -29 00 54 1.409 2.194 130.7 20.2 47 11.5
2025-10-14 00:00 UT 22 55 06.8 -29 02 23 1.415 2.191 129.8 20.5 48 11.5
2025-10-15 00:00 UT 22 54 58.2 -29 03 32 1.421 2.188 128.8 20.8 49 11.5
2025-10-16 00:00 UT 22 54 51.3 -29 04 20 1.426 2.186 127.9 21.1 49 11.5
2025-10-17 00:00 UT 22 54 46.3 -29 04 47 1.433 2.183 127.0 21.4 50 11.5
2025-10-18 00:00 UT 22 54 43.1 -29 04 55 1.439 2.180 126.1 21.7 50 11.6
2025-10-19 00:00 UT 22 54 41.7 -29 04 42 1.445 2.177 125.2 21.9 51 11.6
2025-10-20 00:00 UT 22 54 42.2 -29 04 09 1.452 2.175 124.3 22.2 51 11.6
2025-10-21 00:00 UT 22 54 44.6 -29 03 17 1.458 2.172 123.4 22.5 52 11.6
2025-10-22 00:00 UT 22 54 48.9 -29 02 06 1.465 2.169 122.6 22.8 52 11.6
2025-10-23 00:00 UT 22 54 55.1 -29 00 35 1.472 2.167 121.7 23.0 53 11.6
2025-10-24 00:00 UT 22 55 03.2 -28 58 46 1.478 2.164 120.8 23.3 53 11.7
2025-10-25 00:00 UT 22 55 13.1 -28 56 39 1.485 2.161 120.0 23.5 54 11.7
2025-10-26 00:00 UT 22 55 25.0 -28 54 13 1.492 2.159 119.1 23.7 54 11.7
2025-10-27 00:00 UT 22 55 38.7 -28 51 30 1.500 2.156 118.2 24.0 55 11.7
2025-10-28 00:00 UT 22 55 54.4 -28 48 29 1.507 2.153 117.4 24.2 55 11.7
2025-10-29 00:00 UT 22 56 11.9 -28 45 11 1.514 2.151 116.6 24.4 55 11.7
2025-10-30 00:00 UT 22 56 31.3 -28 41 36 1.522 2.148 115.7 24.6 56 11.7
2025-10-31 00:00 UT 22 56 52.6 -28 37 44 1.529 2.145 114.9 24.8 56 11.8
2025-11-01 00:00 UT 22 57 15.7 -28 33 37 1.537 2.143 114.1 25.0 56 11.8
2025-11-02 00:00 UT 22 57 40.6 -28 29 13 1.544 2.140 113.3 25.2 57 11.8
2025-11-03 00:00 UT 22 58 07.3 -28 24 33 1.552 2.138 112.5 25.4 57 11.8
2025-11-04 00:00 UT 22 58 35.9 -28 19 39 1.560 2.135 111.7 25.6 58 11.8
2025-11-05 00:00 UT 22 59 06.2 -28 14 29 1.567 2.133 110.9 25.7 58 11.8
2025-11-06 00:00 UT 22 59 38.2 -28 09 04 1.575 2.130 110.1 25.9 58 11.8
2025-11-07 00:00 UT 23 00 12.0 -28 03 25 1.583 2.128 109.3 26.1 59 11.9
2025-11-08 00:00 UT 23 00 47.6 -27 57 31 1.591 2.125 108.6 26.2 59 11.9
2025-11-09 00:00 UT 23 01 24.8 -27 51 23 1.599 2.123 107.8 26.4 59 11.9
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.