P/2025 W4 (PanSTARRS) _ PK25W040 _ P12hxMW object ..

[Gremlin]

P/2025 W4 (PanSTARRS) _ PK25W040 _ P12hxMW object (Dec. 17.94 UT), MPEC 2025-Y30, CBET 5648
Ø кометного ядра 541 м

P2025 W4 (PanSTARRS) _ PK25W040 _ P12hxMW object (Dec. 17.94 UT) _ MPEC 2025-Y30, CBET 5648 _ 2025 mag _ 20 12 2025 _ 1.gif

P2025 W4 (PanSTARRS) _ PK25W040 _ P12hxMW object (Dec. 17.94 UT) _ MPEC 2025-Y30, CBET 5648 _ 18 00 UTC + 3 мск _ 18 12 2025 _ 1.gif

P2025 W4 (PanSTARRS) _ PK25W040 _ P12hxMW object (Dec. 17.94 UT) _ MPEC 2025-Y30, CBET 5648 _ 18 12 2025 _ 1.png

P2025 W4 (PanSTARRS) _ PK25W040 _ P12hxMW object (Dec. 17.94 UT) _ MPEC 2025-Y30, CBET 5648 _ 18 12 2025 _ 2.png

P2025 W4 (PanSTARRS) _ PK25W040 _ P12hxMW object (Dec. 17.94 UT) _ MPEC 2025-Y30, CBET 5648 _ 17 12 2025 _ 1.png

P/2025 W4 (PANSTARRS) / PK25W040 (q=2.034 AU, Q=5.158 AU, TP=2025 Oct. 4.53 TT) was picked up at 1220 UT on 23 Nov. by Pan-STARRS 1 (PS1), which observed it at Sept. 5.57-61p4, Nov. 23.51-55p4, and 26.37p2. This detection was confirmed by Pan-STARRS 2 (PS2) (Sept. 20.53-56p3 & 30.52-56p2), E.J. Christensen via the Mt. Lemmon Survey (MLS) (Nov. 15.32-33p4 & 29.35-37p4), Comet Hunter Obs. (Nov. 24.14-17p3), Starhopper Obs. (Nov. 24.92-93p2), Deep Random Survey (DRS) (Nov. 25.22-23p2), R. Weryk via Univ. of Hawaii 88-inch telescope (UH88) (Nov. 26.47-48p2), Sormano2 Obs. (Nov. 26.99-00p2), Marco Micheli via LCO Cerro Tololo A (Nov. 27.19p3), Chante-Perdrix Obs. (Nov. 27.81-86p3), Sormano Obs. (Nov. 27.93-94p2), 29PREMOTE Obs. (Nov. 28.03p1, 28.07-11p2 & Dec. 11.81-88p4), program code 2 via Schiaparelli Obs. (Nov. 28.04p1), program code 5 via LCO McDonald Obs. (Nov. 29.17-20p3), program code 0 via the Zwicky Transient Facility (ZTF) (Nov. 30.30-32p3), Maisoncelles Obs. (Nov. 30.80-87p3), program code 0 via Camarasa Obs. (Dec. 7.89p1 & 7.94-97p2), program code 1 via the Spacewatch 0.9m telescope (Dec. 8.46-47p3 & 16.18-21p3), Mufara Widefield Telescope (Dec. 9.90-92p2), Nastro Verde Obs. (Dec. 10.75p1 & 10.82p1), R. Weryk via Canada-France-Hawaii Telescope (Dec. 11.32p3), Rozzano Civic Obs. (Dec. 12.92-94p3), and AZM Martinsberg (Dec. 14.88-91p3).

Orbital elements:
P/2025 W4 (PANSTARRS)
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Oct. 4.52562 TT Pike
q 2.0343897 (2000.0) P Q
n 0.23799974 Peri. 172.29816 +0.65049004 -0.75927644
a 2.5788043 Node 237.12110 +0.69562788 +0.60564323
e 0.2111113 Incl. 1.29816 +0.30490089 +0.23810833
P 4.14
From 81 observations 2025 Sept. 5-Dec. 16, mean residual 0".6.

Ephemeris:
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2025 11 17 04 57 30.4 +22 18 18 1.0946 2.0485 159.0 10.0 20.8
...
2025 12 02 04 43 55.3 +21 41 06 1.0744 2.0598 177.3 1.3 20.8
...
2025 12 10 04 36 11.3 +21 19 15 1.0864 2.0670 172.7 3.5 20.8
...
2025 12 16 04 30 50.9 +21 03 30 1.1058 2.0731 165.3 6.9 20.9
2025 12 17 04 30 01.5 +21 01 01 1.1099 2.0741 164.1 7.5 20.9
2025 12 18 04 29 13.4 +20 58 35 1.1143 2.0752 162.9 8.0 20.9
...
2025 12 24 04 24 57.8 +20 45 15 1.1452 2.0818 155.8 11.2 21.0
...
2026 01 01 04 21 00.2 +20 31 55 1.1986 2.0913 146.7 15.0 21.1
...
2026 01 16 04 19 34.8 +20 23 29 1.3305 2.1113 131.1 20.6 21.4



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