C/2025 K4 (Siverd) _ CK25K040 _ A11o6Jn object ..

[Gremlin]

C/2025 K4 (Siverd) _ CK25K040 _ A11o6Jn object (June 9.77 UT), MPEC 2025-L55, CBET 5565
Ø кометного ядра 2343 м

C2025 K4 (Siverd) _ CK25K040 _ A11o6Jn object (June 9.77 UT) _ MPEC 2025-L55, CBET 5565 _ 2026 mag _ 23 03 2026 _ 1.gif

C2025 K4 (Siverd) _ CK25K040 _ A11o6Jn object (June 9.77 UT) _ MPEC 2025-L55, CBET 5565 _ 2025 mag _ 09 08 2025 _ 1.gif

C2025 K4 (Siverd) _ CK25K040 _ A11o6Jn object (June 9.77 UT) _ MPEC 2025-L55, CBET 5565 _ 2025 mag _ 14 06 2025 _ 1.gif

C2025 K4 (Siverd) _ CK25K040 _ A11o6Jn object (June 9.77 UT) _ MPEC 2025-L55, CBET 5565 _ 20 00 UTC + 3 мск _ 09 06 2025 _ 1.gif

C2025 K4 (Siverd) _ CK25K040 _ A11o6Jn object (June 9.77 UT) _ MPEC 2025-L55, CBET 5565 _ 09 06 2025 _ 2.png

C2025 K4 (Siverd) _ CK25K040 _ A11o6Jn object (June 9.77 UT) _ MPEC 2025-L55, CBET 5565 _ 09 06 2025 _ 3.png

C2025 K4 (Siverd) _ CK25K040 _ A11o6Jn object (June 9.77 UT) _ MPEC 2025-L55, CBET 5565 _ 10 06 2025 _ 1.png

C/2025 K4 (Siverd) / CK25K040 (i=38.6°, q=2.537 AU, Q=86.919 AU, TP=2025 July 27.88 TT) was picked up at 2252 UT on 30 May by ATLAS Sutherland, which observed it at May 30.95-97p4. This detection was confirmed by Hidetaka Sato via iTelescope Obs. Siding Spring (May 31.69-70p2), Lesedi Telescope (May 31.91p1, 31.95p1 & 31.99p1), Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (June 2.08-09p3 & 5.99-00p3), DRS (June 4.13-16p3), Auger Obs. (June 5.27-31p2), and SONEAR Wykrota-CEAMIG (June 6.03-05p3).

Orbital elements:
C/2025 K4 (Siverd)
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2025 July 27.88407 TT Pike
q 2.5367534 (2000.0) P Q
z +0.0230098 Peri. 326.76386 -0.00090449 +0.83170149
+/-0.0131943 Node 297.07082 -0.72629821 -0.38219491
e 0.9416297 Incl. 38.57465 -0.68737915 +0.40274021
From 23 observations 2025 May 30-June 6, mean residual 0".5.

Ephemeris:
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2025 05 10 16 08 57.3 -69 40 36 1.9346 2.6669 127.0 17.6 19.8
...
2025 05 25 15 57 19.8 -68 24 10 1.8307 2.6231 132.5 16.5 19.6
...
2025 06 02 15 51 20.3 -67 03 09 1.7903 2.6032 134.5 16.1 19.5
...
2025 06 08 15 47 50.2 -65 44 29 1.7677 2.5899 135.4 16.0 19.5
2025 06 09 15 47 21.8 -65 29 59 1.7646 2.5878 135.4 16.0 19.5
2025 06 10 15 46 55.4 -65 15 05 1.7617 2.5858 135.5 16.0 19.5
...
2025 06 16 15 45 01.9 -63 38 10 1.7484 2.5744 135.6 16.0 19.4
...
2025 06 24 15 44 36.6 -61 11 10 1.7422 2.5615 134.7 16.4 19.4
...
2025 07 09 15 50 10.3 -55 58 44 1.7678 2.5445 130.1 17.8 19.4



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