The following list was compiled by Worachate Boonplod.
All dates and magnitudes are approximate.Note that the limiting magnitude for LASCO C3 is approximately 8.0 to 8.5 (depending on object/star), and for C2 is approximately 8.5 - 9.0.
Regarding C/2017 S3 (PANSTARRS), magnitudes (brightness) of this comet are highly uncertain, ranging from around 0 to +7. We are not providing a value here until a more confident estimate is available, and also note the possibility exists that this comet will not survive perihelion.
LASCO C3
|
(Dec07)-Feb11 |
Venus |
mag -4 |
right to left |
| Feb06-Feb26 |
Mercury |
mag -2 |
right to left |
| Feb24-Mar12 |
Neptune |
mag +8.0 |
left to right |
| Mar28-Apr06 |
Mercury |
mag +5 |
left to right |
| Apr10-Apr27 |
Uranus |
mag +5.9 |
left to right |
| May30-Jun12 |
Mercury |
mag -2 |
right to left |
| Aug05-Aug13 |
Mercury |
mag +5 |
left to right |
| Aug24-Sep13 |
C/2017 S3 |
TBD |
lower left to top |
| Sep12-Oct01 |
Mercury |
mag -2 |
right to left |
| Sep28-Oct16 |
1 Ceres |
mag +8.5 |
left to right |
| Oct23-Oct30 |
Venus |
mag -4 |
left to right |
| Nov16-Dec06 |
Jupiter |
mag -1.7 |
left to right |
| Nov24-Nov30 |
Mercury |
mag +5 |
left to right |
| Dec24-(Jan11 |
Saturn |
mag +0.5 |
left to right |
LASCO C2
| Jan02-Jan16 |
Venus |
mag -4 |
right to left |
| Mar02-Mar06 |
Neptune |
mag +8.0 |
left to right |
| Apr16-Apr20 |
Uranus |
mag +5.9 |
left to right |
| Jun04-Jun07 |
Mercury |
mag -2 |
right to left |
| Sep19-Sep23 |
Mercury |
mag -2 |
right to left |
| Nov24-Nov28 |
Jupiter |
mag -1.7 |
left to right |
| Dec31-(Jan04 |
Saturn |
mag +0.5 |
left to right |