C/2025 J1 (Borisov) _ CK25J010 _ gb00795 object ..

[Gremlin]

C/2025 J1 (Borisov) _ CK25J010 _ gb00795 object (May 17.17 UT), MPEC 2025-K05, CBET 5555
Ø кометного ядра 14806.79 м

C2025 J1 (Borisov) _ CK25J010 _ gb00795 object (May 17.17 UT) _ MPEC 2025-K05, CBET 5555 _ 2026 mag _ 28 07 2026 _ 1.gif

C2025 J1 (Borisov) _ CK25J010 _ gb00795 object (May 17.17 UT) _ MPEC 2025-K05, CBET 5555 _ 2026 mag _ 23 03 2026 _ 1.gif

C2025 J1 (Borisov) _ CK25J010 _ gb00795 object (May 17.17 UT) _ MPEC 2025-K05, CBET 5555 _ 2026 mag _ 02 01 2026 _ 1.gif

C2025 J1 (Borisov) _ CK25J010 _ gb00795 object (May 17.17 UT) _ MPEC 2025-K05, CBET 5555 _ 2025 mag _ 09 08 2025 _ 1.gif

C2025 J1 (Borisov) _ CK25J010 _ gb00795 object (May 17.17 UT) _ MPEC 2025-K05, CBET 5555 _ 2025 mag _ 30 05 2025 _ 1.gif

C2025 J1 (Borisov) _ CK25J010 _ gb00795 object (May 17.17 UT) _ MPEC 2025-K05, CBET 5555 _ 18 00 UTC + 3 мск _ 17 05 2025 _ 1.gif

C2025 J1 (Borisov) _ CK25J010 _ gb00795 object (May 17.17 UT) _ MPEC 2025-K05, CBET 5555 _ 17 05 2025 _ 1.png

C2025 J1 (Borisov) _ CK25J010 _ gb00795 object (May 17.17 UT) _ MPEC 2025-K05, CBET 5555 _ 17 05 2025 _ 2.png

C2025 J1 (Borisov) _ CK25J010 _ gb00795 object (May 17.17 UT) _ MPEC 2025-K05, CBET 5555 _ 17 05 2025 _ 4.png

C2025 J1 (Borisov) _ CK25J010 _ gb00795 object (May 17.17 UT) _ MPEC 2025-K05, CBET 5555 _ 18 05 2025 _ 1.png

C/2025 J1 (Borisov) / CK25J010 (i=95.4°, q=3.573 AU, Q=15948.090 AU, TP=2026 June 11.77 TT) was picked up at 2326 UT on 2 May by MARGO, which observed it at May 2.98-01p3, 3.78-85p6, 3.96-98p3, 4.94-95p3, 5.84-86p3, 6.94p3, 7.84-86p3, 10.85-87p3, 11.84-85p3, 13.80-81p3, 14.83-84p3, and 15.79-81p3. This detection was confirmed by the Zwicky Transient Facility (ZTF) (April 29.32p1, 29.46p1, May 2.34-38p2 & 8.44p1), B. Stecklum via Schwarzschild Obs. (May 3.09p3), Jiama'erdeng Tianwentai (May 3.80-83p3 & 13.89-91p3), ROASTERR-1 (May 3.84-85p2), LCO Tenerife Aqawan A#1 (May 4.06-07p3), Kysuce Obs. (May 4.86-87p2), M. Masek via La Palma (May 4.96-00p2), Tarbatness Obs. (May 4.99-00p2, 9.05-07p2 & 16.98-00p2), Tree Gate Farm Obs. (May 5.15-17p3, 8.15p2 & 14.10-13p3), Great Shefford Obs. (May 5.89-90p2 & 9.98-01p2), Huenfelden Obs. (May 5.90-91p2, 10.91p2, 11.93p2, 13.93-94p4 & 15.88p2), Chelmsford Obs. (May 6.92-95p2 & 10.05-08p2), Muensterschwarzach Obs. (May 6.99-02p3), Hidetaka Sato via iTelescope Obs. Auberry (May 7.34-35p2), F.D. Romanov via iTelescope Obs. Beryl Jct. (May 8.20-22p2), Soerth Obs. (May 8.86-87p2), Olmen Obs. (May 9.97-98p3 & 15.95-96p3), Farra d'Isonzo Obs. (May 10.99-00p2), Alto Turia Obs. (May 11.89-90p3), Visnjan Obs. (May 11.89-90p5), Buchloe Obs. (May 12.86p3), F. Ocana via Calar Alto Schmidt (May 13.04-05p3), Jurassien-Vicques Obs. (May 13.86-89p3), Sormano2 Obs. (May 14.87-90p3), and A. Ivanov & team via Kuban State Univ. Obs. (May 15.92-93p3).

Orbital elements:
C/2025 J1 (Borisov)
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2026 June 11.77130 TT Veres
q 3.5731695 (2000.0) P Q
z +0.0001254 Peri. 166.75770 -0.08954099 +0.07608968
+/-0.0006237 Node 273.99849 +0.79881472 +0.60101607
e 0.9995519 Incl. 95.44029 +0.59487600 -0.79560672
From 136 observations 2025 Apr. 29-May 16, mean residual 0".4.

Ephemeris:
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2025 04 17 19 33 58.7 +80 08 47 5.2131 5.1356 80.0 11.1 19.8
...
2025 05 02 19 39 22.1 +84 16 31 5.1919 5.0473 76.2 11.2 19.7
...
2025 05 10 19 29 27.9 +86 25 01 5.1843 5.0006 74.0 11.2 19.7
...
2025 05 16 18 55 39.2 +87 56 48 5.1795 4.9659 72.3 11.2 19.6
2025 05 17 18 43 29.4 +88 11 11 5.1787 4.9601 72.0 11.2 19.6
2025 05 18 18 27 22.8 +88 25 02 5.1779 4.9543 71.7 11.2 19.6
...
2025 05 24 13 41 31.8 +89 09 00 5.1734 4.9198 70.0 11.2 19.6
...
2025 06 01 10 10 22.7 +87 36 15 5.1667 4.8741 67.8 11.1 19.5
...
2025 06 16 09 40 12.3 +84 04 32 5.1489 4.7894 63.9 11.0 19.5



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