C/2015 ER61 ( PanSTARRS )

Japanese version
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Updated on March 5, 2020

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* Profile

Discovery Date March 14, 2015
Magnitude 20.7 mag
Discoverer Pan-STARRS 1 telescope (Haleakala)

* Pictures

* Orbital Elements

C/2015 ER61 (PANSTARRS)
Epoch 2017 May 7.0 TT = JDT 2457880.5
T 2017 May  9.94399 TT                                  MPCW
q   1.0421312            (2000.0)            P               Q
z  +0.0026203      Peri.   68.19306     +0.54600849     +0.83284175
                   Node   235.22098     -0.80369295     +0.49009610
e   0.9972693      Incl.    6.34876     -0.23654254     +0.25725559
From 2750 observations 2015 Jan. 21-2018 Dec. 12, mean residual 0".6.
     Nongravitational parameters A1 = +0.68, A2 = -0.3015.

C/2015 ER61-B (PANSTARRS)
Epoch 2017 May 7.0 TT = JDT 2457880.5
T 2017 May  9.92133 TT                                  MPCW
q   1.0438546            (2000.0)            P               Q
z  +0.0012708      Peri.   68.28210     +0.54781018     +0.83165107
 +/-0.0000572      Node   235.25620     -0.80263026     +0.49181009
e   0.9986735      Incl.    6.35035     -0.23598448     +0.25783586
From 52 observations 2017 June 11-Dec. 17, mean residual 1".1.

* Finding Charts

* Magnitudes Graph

        m1 = 3.0 + 5 log d + 15.0 log r  [    ,-390]  (             - 2016 Apr. 14)
        m1 = 6.5 + 5 log d + 10.0 log r  [-390,   0]  (2016 Apr. 14 - 2017 May   9)
        m1 = 6.5 + 5 log d + 15.0 log r  [   0, 150]  (2017 May   9 - 2017 Oct.  6)
        m1 = 8.5 + 5 log d + 10.0 log r  [ 150,    ]  (2017 Oct.  6 -             )

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The orbital elements are published on M.P.E.C. 2019-J142.
The orbital elements of the fragment B are published on M.P.E.C. 2018-B155.
The charts are made with StellaNavigator Ver.10 (AstroArts).
The magnitudes graphs are made with Comet for Windows.

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