C/2019 B1 (Africano) |
ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
PA |
Nearest approach | 10 Feb 2019 | 17.3 | 1.670 AU | 0.917 AU | 08h00m | +69°57' | 122.6° | 29.8° | 153° |
Perihelion | 18 Mar 2019 | 18.2 | 1.598 AU | 1.472 AU | 04h54m | +27°21' | 78.1° | 37.5° | 83° |
Today | 25 Apr 2024 | 33.0 | 15.026 AU | 15.220 AU | 22h34m | -45°40' | 77.0° | 3.7° | 235° |
C/2019 B1 (Africano)- 2024-04-25
astro.vanbuitenen.nl
The interactive orbit chart above shows the comet'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 C/2019 B1 (Africano) are:
e (Eccentricity) : 0.9884380
q (Perihelion distance) : 1.5980340
i (Inclination) : 123.44310
Ω (Longitude of ascending node) : 290.28490
ω (Argument of perihelion) : 174.77840
L (Longitude of perihelion) : 293.16813
B (Latitude of perihelion) : 4.35524
T (Time of perihelion passage) : 2458561.10170
P (Orbital period in years) : 1624.91
Epoch : 2024 Apr 25
Reference : MPEC 2022-L66
Classification(s): : Nearly isotropic; Returning (a < 10000 AU); External (P > 200 years)
The light curve chart below shows the estimated development of the comet's magnitude. Blue and black dots are visual and photometric CCD observations respectively from COBS or the MPC.
The gray curve is based on the absolute magnitude and slope parameter as calculated from the original MPEC, or the latest values provided by the MPC (16.00 + 5 log[∆] + 10.00 log[r]), whereas the red curve is being recalculated every 6 hours based on the available COBS/MPC observations (currently 15.30 + 5 log[∆] + 10.00 log[r]).
The all-sky chart below shows the path of the comet over the same period as the light curve. The comet's current position is marked yellow.
The following chart shows the short-term path of the comet in a field of view that is optimized for (~10x50) binoculars and finderscopes.
A more printer-friendly version of the same chart can be found further down this page as well.
The following chart shows the current location of the comet in a smaller, upside-down telescopic field of view.
A printable version of the short-term path of the comet in a field of view that is optimized for (~10x50) binoculars and finderscopes.
Ephemerides:
Date Time RA (2000) DEC (2000) delta radius elong phase PA magn
2024-04-25 00:00 UT 22 33 58.9 -45 39 03 15.226 15.022 76.4 3.7 234 33.0
2024-04-25 19:25 UT 22 34 05.4 -45 40 03 15.220 15.026 77.0 3.7 235 33.0
2024-04-26 00:00 UT 22 34 06.9 -45 40 17 15.218 15.027 77.2 3.7 235 33.0
2024-04-27 00:00 UT 22 34 14.7 -45 41 33 15.210 15.033 78.0 3.8 235 33.0
2024-04-28 00:00 UT 22 34 22.2 -45 42 52 15.202 15.039 78.8 3.8 236 33.0
2024-04-29 00:00 UT 22 34 29.4 -45 44 12 15.194 15.045 79.6 3.8 236 33.0
2024-04-30 00:00 UT 22 34 36.3 -45 45 35 15.186 15.050 80.4 3.8 237 33.0
2024-05-01 00:00 UT 22 34 42.9 -45 47 00 15.178 15.056 81.2 3.8 238 33.0
2024-05-02 00:00 UT 22 34 49.2 -45 48 28 15.169 15.062 82.0 3.8 238 33.0
2024-05-03 00:00 UT 22 34 55.2 -45 49 57 15.161 15.068 82.8 3.8 239 33.0
2024-05-04 00:00 UT 22 35 00.9 -45 51 29 15.153 15.073 83.6 3.8 239 33.0
2024-05-05 00:00 UT 22 35 06.3 -45 53 02 15.144 15.079 84.4 3.8 240 33.0
Terminology:
delta: distance between comet and earth in AU
radius: distance between comet 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-comet)
phase: phase angle in degrees (angle sun-comet-earth)
AU: Astronomical Unit (mean distance between earth and sun: 149597870.7 km
Orbital elements usually provided by the MPC (Minor Planet Center).
Observations contributed by observers worldwide, via COBS (Comet Observation Database) or 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.