(335) Roberta |
ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
Today | 10 Jul 2025 | 14.6 | 2.630 AU | 3.268 AU | 04h11m | +16°58' | 43.8° | 15.5° |
Opposition | 11 Dec 2025 | 13.0 | 2.831 AU | 1.851 AU | 05h20m | +15°51' | 172.7° | 2.5° |
(335) Roberta - 2025-07-10
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 Roberta are:
e (Eccentricity) : 0.1718252
a (Semimajor axis) : 2.4753265
i (Inclination) : 5.10246
Ω (Longitude of ascending node) : 148.41358
ω (Argument of perihelion) : 139.79183
M (Mean anomaly) : 85.50954
Epoch : 2025 May 05
L (Longitude of perihelion) : 108.31754
B (Latitude of perihelion) : 3.29144
P (Orbital period in years) : 3.89
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
2025-07-10 00:00 UT 04 11 13.4 +16 58 30 3.268 2.630 43.8 15.5 255 14.6
2025-07-10 02:04 UT 04 11 21.5 +16 58 47 3.268 2.631 43.8 15.5 255 14.6
2025-07-11 00:00 UT 04 12 47.1 +17 01 44 3.261 2.632 44.4 15.7 255 14.6
2025-07-12 00:00 UT 04 14 20.5 +17 04 54 3.253 2.634 44.9 15.8 256 14.6
2025-07-13 00:00 UT 04 15 53.6 +17 07 59 3.246 2.635 45.5 16.0 256 14.6
2025-07-14 00:00 UT 04 17 26.3 +17 10 59 3.238 2.637 46.1 16.1 256 14.6
2025-07-15 00:00 UT 04 18 58.7 +17 13 55 3.230 2.639 46.7 16.3 256 14.6
2025-07-16 00:00 UT 04 20 30.8 +17 16 46 3.222 2.640 47.3 16.4 257 14.6
2025-07-17 00:00 UT 04 22 02.5 +17 19 32 3.214 2.642 47.8 16.6 257 14.6
2025-07-18 00:00 UT 04 23 33.8 +17 22 13 3.206 2.643 48.4 16.7 257 14.6
2025-07-19 00:00 UT 04 25 04.8 +17 24 50 3.198 2.645 49.0 16.9 257 14.6
2025-07-20 00:00 UT 04 26 35.4 +17 27 22 3.189 2.647 49.6 17.0 257 14.6
2025-07-21 00:00 UT 04 28 05.6 +17 29 49 3.181 2.648 50.2 17.1 258 14.6
2025-07-22 00:00 UT 04 29 35.4 +17 32 12 3.172 2.650 50.8 17.3 258 14.6
2025-07-23 00:00 UT 04 31 04.8 +17 34 30 3.164 2.651 51.4 17.4 258 14.6
2025-07-24 00:00 UT 04 32 33.8 +17 36 43 3.155 2.653 52.0 17.6 258 14.6
2025-07-25 00:00 UT 04 34 02.3 +17 38 52 3.146 2.655 52.6 17.7 258 14.6
2025-07-26 00:00 UT 04 35 30.4 +17 40 56 3.137 2.656 53.2 17.8 259 14.6
2025-07-27 00:00 UT 04 36 58.1 +17 42 55 3.128 2.658 53.8 18.0 259 14.6
2025-07-28 00:00 UT 04 38 25.3 +17 44 50 3.119 2.659 54.4 18.1 259 14.6
2025-07-29 00:00 UT 04 39 52.0 +17 46 40 3.110 2.661 55.0 18.2 259 14.6
2025-07-30 00:00 UT 04 41 18.3 +17 48 26 3.100 2.663 55.6 18.3 259 14.6
2025-07-31 00:00 UT 04 42 44.1 +17 50 07 3.091 2.664 56.2 18.5 259 14.6
2025-08-01 00:00 UT 04 44 09.4 +17 51 44 3.082 2.666 56.8 18.6 260 14.6
2025-08-02 00:00 UT 04 45 34.2 +17 53 16 3.072 2.667 57.5 18.7 260 14.6
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.