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Comet C/2024 R4 (PANSTARRS)- 26 dec. 2025

Af(rho) data according the CARA-approach is available via request to CARA-coordinator

http://cara.uai.it

Astrometric data for minor planet center (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/2024 R4  |        | CCD|B96 |2025-12-26T18:44:37Z   |322.97530  |+21.01144  |0.95 |0.96  |   Gaia3|15.6 |0.10  |  Gr|   R|   Gaia3| 5.6  |1.21  |3.5   | 120|0.38  |  1184|     |

       |C/2024 R4  |        | CCD|B96 |2025-12-26T18:54:03Z   |322.97576  |+21.01123  |0.35 |0.40  |   Gaia3|16.5 |0.16  |  Gr|   R|   Gaia3| 5.6  |0.84  |3.5   | 120|0.41  |  1110|     |

       |C/2024 R4  |        | CCD|B96 |2025-12-26T19:03:28Z   |322.97641  |+21.01123  |1.37 |1.39  |   Gaia3|15.3 |0.13  |  Gr|   R|   Gaia3| 5.6  |0.97  |3.4   | 120|0.45  |  1011|     |

Af(rho) parameter according CARA-approach

Af(rho vs. core distance - data obtained from R-filtered CCD-image

ICQ-format - photometry:

ICQ Code:

   2024R4  2025 12 26.78  C 16.7 AQ 40.0L 3A080   0.2               ICQ XX BRY04I     C 0.24mST0 K6F KPR 0 U1*0.01       1.2s 1.2 ;

CometObs format:

C/2024 R4 (PANSTARRS):

2025  Dec.  26.78  UT: m1=16.7 CCD-C, Dia.=0.2', 40.0-cm Newtonian reflector .(Erik Bryssinck, BRIXIIS Observatory)