|
(221) Eos |
| ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
| Today | 4 Mar 2026 | 12.9 | 2.712 AU | 3.701 AU | 23h05m | -09°11' | 3.2° | 1.2° |
| Opposition | 31 Oct 2026 | 11.8 | 2.855 AU | 1.888 AU | 02h43m | -01°07' | 163.9° | 5.5° |
(221) Eos - 2026-03-04
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 Eos are:
e (Eccentricity) : 0.1010595
a (Semimajor axis) : 3.0125182
i (Inclination) : 10.89026
Ω (Longitude of ascending node) : 141.71015
ω (Argument of perihelion) : 192.48158
M (Mean anomaly) : 348.95146
Epoch : 2025 Nov 21
L (Longitude of perihelion) : 153.97381
B (Latitude of perihelion) : -2.34017
P (Orbital period in years) : 5.23
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
2026-03-04 00:00 UT 23 05 10.3 -09 11 43 3.701 2.712 3.2 1.2 143 12.9
2026-03-04 15:20 UT 23 06 14.4 -09 06 17 3.702 2.712 3.1 1.1 150 12.9
2026-03-05 00:00 UT 23 06 50.6 -09 03 13 3.702 2.712 3.1 1.1 153 12.9
2026-03-06 00:00 UT 23 08 30.9 -08 54 43 3.702 2.712 3.2 1.2 164 12.9
2026-03-07 00:00 UT 23 10 11.0 -08 46 12 3.703 2.713 3.3 1.2 173 12.9
2026-03-08 00:00 UT 23 11 51.1 -08 37 40 3.703 2.713 3.5 1.3 182 12.9
2026-03-09 00:00 UT 23 13 31.1 -08 29 07 3.703 2.713 3.8 1.4 190 12.9
2026-03-10 00:00 UT 23 15 11.0 -08 20 34 3.703 2.713 4.2 1.5 196 12.9
2026-03-11 00:00 UT 23 16 50.8 -08 12 01 3.702 2.713 4.6 1.7 201 12.9
2026-03-12 00:00 UT 23 18 30.6 -08 03 27 3.702 2.714 5.0 1.8 206 12.9
2026-03-13 00:00 UT 23 20 10.3 -07 54 52 3.702 2.714 5.4 2.0 209 13.0
2026-03-14 00:00 UT 23 21 49.9 -07 46 17 3.701 2.714 5.9 2.2 212 13.0
2026-03-15 00:00 UT 23 23 29.4 -07 37 42 3.700 2.714 6.4 2.3 215 13.0
2026-03-16 00:00 UT 23 25 08.8 -07 29 07 3.699 2.715 6.9 2.5 217 13.0
2026-03-17 00:00 UT 23 26 48.1 -07 20 31 3.698 2.715 7.4 2.7 219 13.0
2026-03-18 00:00 UT 23 28 27.3 -07 11 56 3.697 2.715 7.9 2.9 221 13.0
2026-03-19 00:00 UT 23 30 06.5 -07 03 20 3.696 2.715 8.4 3.1 222 13.0
2026-03-20 00:00 UT 23 31 45.5 -06 54 45 3.695 2.715 9.0 3.3 224 13.0
2026-03-21 00:00 UT 23 33 24.5 -06 46 09 3.693 2.716 9.5 3.5 225 13.1
2026-03-22 00:00 UT 23 35 03.3 -06 37 34 3.691 2.716 10.0 3.7 226 13.1
2026-03-23 00:00 UT 23 36 42.0 -06 28 59 3.690 2.716 10.6 3.9 227 13.1
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.
