17P/Holmes (2021)

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Updated on February 21, 2021

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* Profile

* Pictures

* Orbital Elements

Epoch 2020 May 31.0 TT = JDT 2459000.5
T 2021 Feb. 19.92105 TT                                 Spoto
q   2.0799388            (2000.0)            P               Q
n   0.14204929     Peri.   24.51014     +0.97561645     +0.12660796
a   3.6378378      Node   326.63435     -0.21239829     +0.75047633
e   0.4282486      Incl.   19.02519     +0.05531288     +0.64865685
P   6.94
From 1632 observations 2011 Jan. 4-2020 Aug. 18, mean residual 0".6.

* Finding Charts

* Magnitudes Graph

        m1 = 11.5 + 5 log d + 12.0 log r  [    ,-240]  (             - 2020 June 24)
        m1 =  1.5 + 5 log d + 35   log r  [-240, 170]  (2020 June 24 - 2021 Aug.  8)
        m1 =  9.3 + 5 log d + 15.0 log r  [ 170,    ]  (2021 Aug.  8 -             )

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The orbital elements are published on M.P.E.C. 2020-S188.
The charts are made with StellaNavigator Ver.8 (AstroArts).
The magnitudes graphs are made with Comet for Windows.

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Copyright(C) Seiichi Yoshida (comet@aerith.net). All rights reserved.