(18) Melpomene |
ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
Today | 1 Jul 2025 | 11.8 | 2.794 AU | 2.747 AU | 12h16m | +07°04' | 82.0° | 21.1° |
Opposition | 8 Jul 2026 | 8.9 | 2.208 AU | 1.206 AU | 19h04m | -09°27' | 166.9° | 6.0° |
(18) Melpomene - 2025-07-01
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 Melpomene are:
e (Eccentricity) : 0.2181123
a (Semimajor axis) : 2.2952637
i (Inclination) : 10.13133
Ω (Longitude of ascending node) : 150.33419
ω (Argument of perihelion) : 228.05742
M (Mean anomaly) : 170.57139
Epoch : 2025 May 05
L (Longitude of perihelion) : 197.94359
B (Latitude of perihelion) : -7.51818
P (Orbital period in years) : 3.48
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
2025-07-01 00:00 UT 12 16 51.4 +07 04 01 2.747 2.794 82.0 21.1 112 11.8
2025-07-01 02:32 UT 12 16 56.4 +07 03 20 2.748 2.794 82.0 21.1 112 11.8
2025-07-02 00:00 UT 12 17 39.2 +06 57 34 2.760 2.793 81.3 21.1 112 11.8
2025-07-03 00:00 UT 12 18 27.8 +06 51 03 2.773 2.793 80.6 21.0 112 11.8
2025-07-04 00:00 UT 12 19 17.1 +06 44 27 2.786 2.793 79.9 21.0 112 11.8
2025-07-05 00:00 UT 12 20 07.2 +06 37 48 2.799 2.793 79.2 21.0 112 11.8
2025-07-06 00:00 UT 12 20 58.0 +06 31 05 2.812 2.792 78.5 20.9 112 11.9
2025-07-07 00:00 UT 12 21 49.5 +06 24 17 2.825 2.792 77.8 20.8 112 11.9
2025-07-08 00:00 UT 12 22 41.7 +06 17 26 2.838 2.792 77.1 20.8 112 11.9
2025-07-09 00:00 UT 12 23 34.7 +06 10 32 2.851 2.792 76.4 20.7 112 11.9
2025-07-10 00:00 UT 12 24 28.3 +06 03 34 2.863 2.791 75.7 20.7 111 11.9
2025-07-11 00:00 UT 12 25 22.6 +05 56 32 2.876 2.791 75.0 20.6 111 11.9
2025-07-12 00:00 UT 12 26 17.5 +05 49 27 2.889 2.791 74.3 20.5 111 11.9
2025-07-13 00:00 UT 12 27 13.1 +05 42 18 2.901 2.791 73.6 20.5 111 11.9
2025-07-14 00:00 UT 12 28 09.4 +05 35 06 2.914 2.790 72.9 20.4 111 11.9
2025-07-15 00:00 UT 12 29 06.3 +05 27 51 2.927 2.790 72.3 20.3 111 11.9
2025-07-16 00:00 UT 12 30 03.8 +05 20 33 2.939 2.790 71.6 20.2 111 11.9
2025-07-17 00:00 UT 12 31 02.0 +05 13 12 2.951 2.789 70.9 20.1 111 11.9
2025-07-18 00:00 UT 12 32 00.7 +05 05 48 2.964 2.789 70.2 20.1 111 11.9
2025-07-19 00:00 UT 12 33 00.1 +04 58 21 2.976 2.789 69.6 20.0 110 11.9
2025-07-20 00:00 UT 12 34 00.1 +04 50 51 2.988 2.788 68.9 19.9 110 11.9
2025-07-21 00:00 UT 12 35 00.6 +04 43 18 3.000 2.788 68.2 19.8 110 12.0
2025-07-22 00:00 UT 12 36 01.8 +04 35 42 3.012 2.788 67.6 19.7 110 12.0
2025-07-23 00:00 UT 12 37 03.5 +04 28 04 3.025 2.787 66.9 19.6 110 12.0
2025-07-24 00:00 UT 12 38 05.8 +04 20 23 3.036 2.787 66.2 19.5 110 12.0
2025-07-25 00:00 UT 12 39 08.7 +04 12 40 3.048 2.786 65.6 19.4 110 12.0
2025-07-26 00:00 UT 12 40 12.1 +04 04 54 3.060 2.786 64.9 19.3 110 12.0
2025-07-27 00:00 UT 12 41 16.0 +03 57 06 3.072 2.786 64.3 19.2 110 12.0
2025-07-28 00:00 UT 12 42 20.5 +03 49 15 3.083 2.785 63.6 19.1 109 12.0
2025-07-29 00:00 UT 12 43 25.5 +03 41 23 3.095 2.785 63.0 19.0 109 12.0
2025-07-30 00:00 UT 12 44 31.1 +03 33 28 3.106 2.784 62.3 18.8 109 12.0
2025-07-31 00:00 UT 12 45 37.1 +03 25 31 3.118 2.784 61.7 18.7 109 12.0
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.