C/2020 S3 (Erasmus) |
ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
PA |
Nearest approach | 17 Nov 2020 | 7.5 | 0.725 AU | 1.042 AU | 12h35m | -18°48' | 41.8° | 65.2° | 278° |
Perihelion | 11 Dec 2020 | 5.2 | 0.395 AU | 1.289 AU | 16h19m | -22°29' | 12.9° | 33.7° | 275° |
Today | 20 Apr 2024 | 26.0 | 12.107 AU | 13.060 AU | 00h40m | +14°25' | 17.7° | 1.4° | 277° |
C/2020 S3 (Erasmus)- 2024-04-20
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/2020 S3 (Erasmus) are:
e (Eccentricity) : 0.9972850
q (Perihelion distance) : 0.3953270
i (Inclination) : 20.02260
Ω (Longitude of ascending node) : 222.58890
ω (Argument of perihelion) : 350.06290
L (Longitude of perihelion) : 213.24149
B (Latitude of perihelion) : -3.38731
T (Time of perihelion passage) : 2459195.09860
P (Orbital period in years) : 1757.03
Epoch : 2024 Apr 19
Reference : MPEC 2024-GJ3
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 (13.50 + 5 log[∆] + 8.00 log[r]), whereas the red curve is being recalculated every 6 hours based on the available COBS/MPC observations (currently 8.90 + 5 log[∆] + 10.63 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
2024-04-20 00:00 UT 00 40 44.8 +14 24 56 13.059 12.106 17.6 1.4 277 26.0
2024-04-20 05:14 UT 00 40 48.6 +14 25 21 13.060 12.107 17.7 1.4 277 26.0
2024-04-21 00:00 UT 00 41 02.2 +14 26 52 13.062 12.112 18.3 1.5 276 26.0
2024-04-22 00:00 UT 00 41 19.6 +14 28 48 13.064 12.119 19.1 1.6 275 26.0
2024-04-23 00:00 UT 00 41 36.8 +14 30 44 13.066 12.126 19.9 1.6 273 26.0
2024-04-24 00:00 UT 00 41 53.9 +14 32 40 13.068 12.133 20.7 1.7 272 26.0
2024-04-25 00:00 UT 00 42 10.9 +14 34 36 13.069 12.139 21.5 1.7 271 26.0
2024-04-26 00:00 UT 00 42 27.7 +14 36 32 13.070 12.146 22.3 1.8 270 26.0
2024-04-27 00:00 UT 00 42 44.5 +14 38 28 13.071 12.153 23.1 1.9 269 26.0
2024-04-28 00:00 UT 00 43 01.1 +14 40 23 13.072 12.159 24.0 1.9 268 26.0
2024-04-29 00:00 UT 00 43 17.6 +14 42 19 13.073 12.166 24.8 2.0 267 26.0
2024-04-30 00:00 UT 00 43 34.0 +14 44 14 13.073 12.173 25.6 2.1 267 26.0
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.