P/2021 TR81 (Lemmon) _ PK21T81R _ no data object ..

[Gremlin]

P/2021 TR81 (Lemmon) _ PK21T81R _ no data object, MPEC 2025-H93, CBET 5550
Ø кометного ядра н/д

P2021 TR81 (Lemmon) _ PK21T81R _ no data object _ MPEC 2025-H93, CBET 55xx _ 2025 mag _ 26 04 2025 _ 1.gif

P2021 TR81 (Lemmon) _ PK21T81R _ no data object _ MPEC 2025-H93, CBET 55xx _ 18 00 UTC + 3 мск _ 24 04 2025 _ 1.gif

P2021 TR81 (Lemmon) _ PK21T81R _ no data object _ MPEC 2025-H93, CBET 55xx _ 26 04 2025 _ 1.png

P2021 TR81 (Lemmon) _ PK21T81R _ no data object _ MPEC 2025-H93, CBET 55xx _ 26 04 2025 _ 2.png

P2021 TR81 (Lemmon) _ PK21T81R _ no data object _ MPEC 2025-H93, CBET 55xx _ 2022 mag _ 07 04 2023 _ 1.gif

P2021 TR81 (Lemmon) _ PK21T81R _ no data object _ MPEC 2025-H93, CBET 55xx _ 23 04 2025 _ 1.png

P2021 TR81 (Lemmon) _ PK21T81R _ no data object _ MPEC 2025-H93, CBET 55xx _ 24 04 2025 _ 1.png

P/2021 TR81 (Lemmon) / PK21T81R (i=36.8°, q=1.465 AU, Q=17.546 AU, TP=2022 Apr. 3.57 TT) was picked up at 0922 UT on 8 Oct. 2021 by the Mt. Lemmon Survey (MLS), which observed it at 2021 Oct. 8.39-41p4, 2021 Oct. 15.32-33p3, 2021 Oct. 28.40-42p4, 2021 Nov. 9.31-32p4, 2021 Nov. 14.30-32p4, and 2021 Dec. 5.24-26p4. This detection was confirmed by PS2 (2021 Sept. 11.50-54p4, 2021 Sept. 29.45-47p3, 2021 Nov. 1.48-49p2, 2021 Nov. 7.41-44p3, 2021 Nov. 25.35-39p4 & 2022 Jan. 8.22-25p7), Pan-STARRS 1 (PS1) (2021 Oct. 13.60-63p3 & 2021 Nov. 12.44-48p4), Space Surveillance Telescope HEH Station (2021 Nov. 8.63p1, 2021 Nov. 8.68p1, 2021 Nov. 8.72-75p2 & 2021 Nov. 8.83p1), the Catalina Sky Survey (CSS) (2021 Dec. 2.26-27p2, 2022 Jan. 31.15-17p4, 2022 Feb. 25.15-16p4, 2022 March 6.13-14p3, 2022 March 10.11-12p3 & 2022 March 28.12-13p4), Hidetaka Sato via iTelescope Obs. Siding Spring (2021 Dec. 29.45p2, 2022 Jan. 23.46p2, 2022 March 21.39p2, 2022 March 22.39p2 & 2022 April 12.39p3), L. Demetz via Skygems Namibia (2022 Jan. 5.87-90p3), NEOWISE (2022 Jan. 6.14p1, 2022 Jan. 6.27p1, 2022 Jan. 6.33p1, 2022 Jan. 6.40p1, 2022 Jan. 6.47p1, 2022 Jan. 6.53p1, 2022 Jan. 6.60p1, 2022 Jan. 6.73p1 & 2022 Jan. 6.86p1), ATLAS Mauna Loa (2022 Jan. 24.32-34p4), Schiaparelli Obs. (2022 March 22.78-80p3 & 2022 March 24.80p2), ATLAS Sutherland (2022 April 10.73-76p4), Schiaparelli Southern Obs. (2022 May 1.75-78p3), and D. De Martin via Skygems Namibia (2022 May 27.73-74p2).

Orbital elements:
P/2021 TR81 (Lemmon)
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2022 Apr. 3.56849 TT Veres
q 1.4649475 (2000.0) P Q
n 0.03793107 Peri. 272.00486 -0.54293174 -0.74548186
a 8.7728223 Node 220.18015 +0.77834340 -0.61956208
e 0.8330130 Incl. 36.81587 -0.31528825 -0.24576334
P 26.0
From 118 observations 2021 Sept. 11-2022 May 27, mean residual 0".6.

Ephemeris:
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2025 03 24 18 33 30.2 +07 09 29 8.6696 8.6311 84.5 6.6 29.7
...
2025 04 08 18 34 15.4 +08 09 03 8.5266 8.7046 96.9 6.6 29.7
...
2025 04 16 18 33 56.1 +08 40 17 8.4535 8.7435 103.6 6.4 29.7
...
2025 04 22 18 33 22.1 +09 03 01 8.4017 8.7726 108.5 6.2 29.7
2025 04 23 18 33 14.8 +09 06 44 8.3934 8.7774 109.3 6.2 29.7
2025 04 24 18 33 07.1 +09 10 25 8.3852 8.7822 110.1 6.2 29.7
...
2025 04 30 18 32 11.1 +09 31 57 8.3385 8.8112 115.0 5.9 29.7
...
2025 05 08 18 30 32.3 +09 58 44 8.2837 8.8496 121.3 5.6 29.7
...
2025 05 23 18 26 21.2 +10 41 11 8.2104 8.9213 132.1 4.8 29.7



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