(415029) 2011 UL21 |
ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
Today | 18 Oct 2025 | 21.6 | 3.497 AU | 2.734 AU | 23h23m | +47°20' | 133.6° | 11.9° |
(415029) 2011 UL21 - 2025-10-18
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 2011 UL21 are:
e (Eccentricity) : 0.6536566
a (Semimajor axis) : 2.1225660
i (Inclination) : 34.88580
Ω (Longitude of ascending node) : 275.31631
ω (Argument of perihelion) : 284.98682
M (Mean anomaly) : 113.97504
Epoch : 2025 May 05
L (Longitude of perihelion) : 203.39039
B (Latitude of perihelion) : -33.53788
P (Orbital period in years) : 3.09
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
2025-10-18 00:00 UT 23 23 45.6 +47 20 20 2.734 3.497 133.6 11.9 134 21.6
2025-10-18 10:18 UT 23 23 19.9 +47 15 36 2.735 3.497 133.5 11.9 133 21.6
2025-10-19 00:00 UT 23 22 46.1 +47 09 15 2.737 3.497 133.5 11.9 132 21.6
2025-10-20 00:00 UT 23 21 48.4 +46 57 58 2.739 3.498 133.3 12.0 131 21.6
2025-10-21 00:00 UT 23 20 52.3 +46 46 30 2.742 3.499 133.1 12.0 129 21.6
2025-10-22 00:00 UT 23 19 58.0 +46 34 52 2.745 3.499 132.9 12.0 127 21.6
2025-10-23 00:00 UT 23 19 05.5 +46 23 05 2.748 3.500 132.6 12.1 125 21.6
2025-10-24 00:00 UT 23 18 14.7 +46 11 08 2.752 3.500 132.4 12.1 124 21.6
2025-10-25 00:00 UT 23 17 25.7 +45 59 03 2.756 3.501 132.1 12.2 122 21.6
2025-10-26 00:00 UT 23 16 38.5 +45 46 50 2.760 3.501 131.8 12.2 121 21.6
2025-10-27 00:00 UT 23 15 53.2 +45 34 29 2.764 3.502 131.5 12.3 119 21.6
2025-10-28 00:00 UT 23 15 09.7 +45 22 03 2.768 3.502 131.1 12.3 117 21.6
2025-10-29 00:00 UT 23 14 28.0 +45 09 30 2.773 3.503 130.7 12.4 116 21.6
2025-10-30 00:00 UT 23 13 48.2 +44 56 51 2.778 3.503 130.3 12.5 114 21.6
2025-10-31 00:00 UT 23 13 10.3 +44 44 08 2.783 3.504 129.9 12.5 113 21.6
2025-11-01 00:00 UT 23 12 34.2 +44 31 21 2.788 3.504 129.5 12.6 111 21.6
2025-11-02 00:00 UT 23 11 60.0 +44 18 30 2.794 3.505 129.1 12.7 110 21.6
2025-11-03 00:00 UT 23 11 27.6 +44 05 36 2.799 3.505 128.6 12.8 108 21.6
2025-11-04 00:00 UT 23 10 57.1 +43 52 39 2.805 3.505 128.1 12.9 107 21.7
2025-11-05 00:00 UT 23 10 28.4 +43 39 41 2.811 3.506 127.6 12.9 105 21.7
2025-11-06 00:00 UT 23 10 01.5 +43 26 41 2.818 3.506 127.1 13.0 104 21.7
2025-11-07 00:00 UT 23 09 36.5 +43 13 40 2.824 3.506 126.6 13.1 103 21.7
2025-11-08 00:00 UT 23 09 13.3 +43 00 38 2.831 3.507 126.1 13.2 102 21.7
2025-11-09 00:00 UT 23 08 51.9 +42 47 37 2.838 3.507 125.5 13.3 100 21.7
2025-11-10 00:00 UT 23 08 32.3 +42 34 36 2.845 3.507 124.9 13.4 99 21.7
2025-11-11 00:00 UT 23 08 14.4 +42 21 36 2.852 3.508 124.4 13.5 98 21.7
2025-11-12 00:00 UT 23 07 58.4 +42 08 37 2.860 3.508 123.8 13.6 97 21.7
2025-11-13 00:00 UT 23 07 44.1 +41 55 40 2.868 3.508 123.2 13.7 95 21.7
2025-11-14 00:00 UT 23 07 31.5 +41 42 46 2.876 3.508 122.5 13.8 94 21.7
2025-11-15 00:00 UT 23 07 20.7 +41 29 54 2.884 3.509 121.9 13.8 93 21.7
2025-11-16 00:00 UT 23 07 11.6 +41 17 06 2.892 3.509 121.3 13.9 92 21.8
2025-11-17 00:00 UT 23 07 04.2 +41 04 21 2.900 3.509 120.6 14.0 91 21.8
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.