C2021 S4 Tsuchinshan
MPC   observation computed with   Astrometrica



COD C23
CON Olmen observatory,  B-2491 Olmen Belgium, 
http://www.astronomie.be/alfons.diepvens/cometimages/
OBS A. Diepvens
MEA A. Diepvens
TEL 0.20-m f/9 Refractor + CCD
ACK MPCReport file updated 2023.11.22 15:22:01
NET Gaia DR2
    CK21S040 KC2023 11 21.91457 04 53 05.69 +41 39 55.4          17.8 G      C23
    CK21S040 KC2023 11 21.91746 04 53 05.63 +41 39 55.4          17.6 G      C23
    CK21S040 KC2023 11 21.92034 04 53 05.54 +41 39 55.6          17.6 G      C23

    CK21S040  C2023 12 17.91682 04 41 53.65 +41 42 56.0          17.6 G      C23
    CK21S040  C2023 12 17.92259 04 41 53.50 +41 42 55.7          17.5 G      C23
    CK21S040  C2023 12 17.92692 04 41 53.40 +41 42 55.7          17.6 G      C23

ADES format

permID |provID     |trkSub  |mode|stn |obsTime                |ra         |dec        |rmsRA|rmsDec|astCat  |mag  |rmsMag|band|photCat |photAp|logSNR|seeing|exp |rmsFit|nStars|notes|remarks

       |C/2021 S4  |        | CCD|C23 |2024-01-08T19:38:49Z   | 68.59192  |+41.25446  |0.25 |0.23  |   Gaia2|17.5 |0.20  |   G|   Gaia2|10.5  |1.08  |2.8   | 120|0.17  |  1953|     |
       |C/2021 S4  |        | CCD|C23 |2024-01-08T19:45:03Z   | 68.59182  |+41.25447  |0.32 |0.31  |   Gaia2|17.3 |0.20  |   G|   Gaia2|10.5  |1.07  |3.0   | 120|0.18  |  1950|     |
       |C/2021 S4  |        | CCD|C23 |2024-01-08T19:53:22Z   | 68.59131  |+41.25421  |0.23 |0.20  |   Gaia2|17.5 |0.21  |   G|   Gaia2|10.5  |1.01  |3.2   | 120|0.19  |  1739|     |

permID |provID     |trkSub  |mode|stn |obsTime                |ra         |dec        |rmsRA|rmsDec|rmsFit|astCat  |mag  |rmsMag|band|photCat |photAp|logSNR|exp |notes|remarks
       |C/2021 S4  | ABC0201| CCD|C23 |2024-01-26T21:25:29Z   |67.93348   |+40.68991  |0.24 |0.25  |0.13  |  ATLAS2|17.7 |0.15  |  Rc|  ATLAS2| 6.7  |0.88  | 360|    K|
       |C/2021 S4  | ABC0201| CCD|C23 |2024-01-26T21:31:43Z   |67.93354   |+40.68951  |0.20 |0.21  |0.13  |  ATLAS2|17.5 |0.38  |  Rc|  ATLAS2| 6.7  |0.98  | 360|    K|
       |C/2021 S4  | ABC0201| CCD|C23 |2024-01-26T21:37:57Z   |67.93315   |+40.68943  |0.26 |0.27  |0.13  |  ATLAS2|17.8 |0.22  |  Rc|  ATLAS2| 6.7  |0.83  | 360|    K|

       |C/2021 S4  | ABC0479| CCD|C23 |2024-03-04T20:59:04Z   |69.85902   |+39.56259  |0.23 |0.20  |0.18  |  ATLAS2|17.6 |0.13  |  Rc|  ATLAS2| 6.7  |1.00  | 360|    K|
       |C/2021 S4  | ABC0479| CCD|C23 |2024-03-04T21:05:18Z   |69.85943   |+39.56261  |0.19 |0.15  |0.18  |  ATLAS2|17.3 |0.16  |  Rc|  ATLAS2| 6.7  |1.20  | 360|    K|
       |C/2021 S4  | ABC0479| CCD|C23 |2024-03-04T21:11:32Z   |69.85997   |+39.56233  |0.19 |0.15  |0.18  |  ATLAS2|17.7 |0.10  |  Rc|  ATLAS2| 6.7  |1.19  | 360|    K|

       |C/2021 S4  | ABC0622| CCD|C23 |2024-03-24T20:23:18Z   |72.51931   |+39.16643  |0.30 |0.31  |0.19  |  ATLAS2|17.1 |0.29  |  Rc|  ATLAS2| 6.7  |0.79  | 360|    K|
       |C/2021 S4  | ABC0622| CCD|C23 |2024-03-24T20:35:46Z   |72.52109   |+39.16587  |0.26 |0.28  |0.20  |  ATLAS2|17.4 |0.18  |  Rc|  ATLAS2| 6.7  |0.86  | 360|    K|