21P/Giacobini-Zinner (2025)

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Updated on November 27, 2024

Profile

Orbital Elements Epoch 2024 Mar. 31.0 TT = JDT 2460400.5 T 2025 Mar. 25.33093 TT Rudenko q 1.0089930 (2000.0) P Q n 0.15095750 Peri. 172.91563 +0.98466288 -0.10357172 a 3.4932762 Node 195.34021 +0.12234408 +0.98361269 e 0.7111614 Incl. 32.05341 +0.12438227 -0.14757699 P 6.53 >From 4688 observations 2011 May 1-2024 May 8, mean residual 0".9. Nongravitational parameters A1 = +0.38, A2 = -0.1567.

Finding Charts

Magnitudes Graph m1 = 9.0 + 5 log d + 20.0 log r(t + 8) [ , 0] ( - 2025 Mar. 25) m1 = 9.0 + 5 log d + 16.0 log r(t + 8) [ 0,190] (2025 Mar. 25 - 2025 Oct. 1) m1 = 11.5 + 5 log d + 10.0 log r [190, ] (2025 Oct. 1 - )

The orbital elements are published on M.P.E.C. 2024-J304. The charts are made with StellaNavigator Ver.11 (AstroArts). The magnitudes graphs are made with Comet for Windows.