Forum der Vereinigung der Sternfreunde

COMET C/2021 T4 (Lemmon)

E. Bryssinck reports cometary activity of an asteroidal NEOCP candidate
(submitted by Mount Lemmon Survey on Oct. 7 UT) in twelve 120-second images
taken on Oct. 11 at Telescope Live (X02), noting a condensed 9" coma elongated
in position angle 321 deg. Prediscovery astrometry was reported back to Aug.
2021.


Orbital elements:
C/2021 T4 (Lemmon)
Epoch 2023 Aug. 4.0 TT = JDT 2460160.5
T 2023 July 31.46285 TT Rudenko
q 1.4833571 (2000.0) P Q
z -0.0000030 Peri. 329.81037 +0.28281626 -0.90353972
+/-0.0002371 Node 257.88348 -0.80095552 -0.40711743
e 1.0000044 Incl. 160.77659 -0.52771698 +0.13368384
From 67 observations 2021 Aug. 7-Oct. 28, mean residual 0".5.