Forum der Vereinigung der Sternfreunde

Orbital elements:
P/2015 Q1 (Scotti)
Epoch 2015 Sept. 15.0 TT = JDT 2457280.5
T 2015 Sept. 9.15650 TT Rudenko
q 1.7516758 (2000.0) P Q
n 0.15519460 Peri. 198.96538 +0.74983999 -0.64383293
a 3.4294014 Node 203.30981 +0.64584701 +0.76227562
e 0.4892182 Incl. 22.64888 +0.14360230 -0.06644567
P 6.35
From 386 observations 2015 Aug. 18-2021 Aug. 16, mean residual 0".8.

P/2015 Q1 (Scotti)
Epoch 2022 Mar. 2.0 TT = JDT 2459640.5
T 2022 Feb. 13.36824 TT Rudenko
q 1.8136785 (2000.0) P Q
n 0.15232046 Peri. 199.85680 +0.74482386 -0.65066265
a 3.4724065 Node 202.84612 +0.65204935 +0.75679827
e 0.4776883 Incl. 22.39208 +0.14166531 -0.06240590
P 6.47
From 386 observations 2015 Aug. 18-2021 Aug. 16, mean residual 0".8.

MPEC 2021-Q75

_________________
Michael Möller (MMI)

auch cbet 5026.
18,5 mag am 25. August.

_________________
Uwe Pilz, Fachgruppen Kometen und Astrophysik/Algorithmen.
Oft benutzte Instrumente: Fujinon 16x70 FMT-SX-2, TMB Apo 105/650, Skywatcher Evostar 120/900 ED, Ninja Dobson 320/1440, Smartscope Dwarf-3

Neue Bahnelemente: (CBET 5038)


The following linked orbital elements by S. Nakano
(CBAT) are from 359 observations spanning 2002-2021 (mean residual 0".7).
The comet passed 0.58 AU and 1.54 AU from Jupiter on 2005 Dec. 2 and 2017
Dec. 8 UT, respectively.

Epoch = 2002 Oct. 13.0 TT
T = 2002 Oct. 8.13816 TT Peri. = 195.15148
e = 0.4461073 Node = 205.76071 2000.0
q = 1.9503707 AU Incl. = 23.45493
a = 3.5212068 AU n = 0.14916494 P = 6.61 years

Epoch = 2009 May 9.0 TT
T = 2009 Apr. 30.98772 TT Peri. = 198.75683
e = 0.4893379 Node = 203.37773 2000.0
q = 1.7498483 AU Incl. = 22.65902
a = 3.4266264 AU n = 0.15538316 P = 6.34 years

Epoch = 2015 Sept.15.0 TT
T = 2015 Sept. 9.15504 TT Peri. = 198.96479
e = 0.4892169 Node = 203.31006 2000.0
q = 1.7516813 AU Incl. = 22.64897
a = 3.4294034 AU n = 0.15519446 P = 6.35 years

Epoch = 2022 Mar. 2.0 TT
T = 2022 Feb. 13.36773 TT Peri. = 199.85616
e = 0.4776873 Node = 202.84639 2000.0
q = 1.8136825 AU Incl. = 22.39218
a = 3.4724073 AU n = 0.15232041 P = 6.47 years

Epoch = 2028 Aug. 17.0 TT
T = 2028 Aug. 9.23783 TT Peri. = 199.98018
e = 0.4766251 Node = 202.79615 2000.0
q = 1.8208697 AU Incl. = 22.36768
a = 3.4790924 AU n = 0.15188159 P = 6.49 years

Epoch = 2035 Feb. 2.0 TT
T = 2035 Feb. 3.36281 TT Peri. = 199.84795
e = 0.4755591 Node = 202.78295 2000.0
q = 1.8274108 AU Incl. = 22.35073
a = 3.4844931 AU n = 0.15152862 P = 6.50 years

The astrometric CCD magnitudes indicate that the comet was intrinsically
brighter in 2015-2016 than in 2002 and 2021 by about 3 magnitudes; the
ephemeris below uses photometric power-law parameters H = 15.5 and 2.5n = 10
for the magnitudes, which follow the 2002 and 2021 brightness data. Close
photometric monitoring of the comet during the remainder of the current
return is encouraged.

_________________
Michael Möller (MMI)

Auch in cbet 5038:

                   Epoch = 2002 Oct. 13.0 TT
    T = 2002 Oct.  8.13816 TT        Peri. = 195.15148
    e = 0.4461073                    Node  = 205.76071 2000.0
    q = 1.9503707 AU                 Incl. =  23.45493
      a =  3.5212068 AU   n = 0.14916494   P =   6.61 years

                   Epoch = 2009 May   9.0 TT
    T = 2009 Apr. 30.98772 TT        Peri. = 198.75683
    e = 0.4893379                    Node  = 203.37773 2000.0
    q = 1.7498483 AU                 Incl. =  22.65902
      a =  3.4266264 AU   n = 0.15538316   P =   6.34 years

                   Epoch = 2015 Sept.15.0 TT
    T = 2015 Sept. 9.15504 TT        Peri. = 198.96479
    e = 0.4892169                    Node  = 203.31006 2000.0
    q = 1.7516813 AU                 Incl. =  22.64897
      a =  3.4294034 AU   n = 0.15519446   P =   6.35 years

                   Epoch = 2022 Mar.  2.0 TT
    T = 2022 Feb. 13.36773 TT        Peri. = 199.85616
    e = 0.4776873                    Node  = 202.84639 2000.0
    q = 1.8136825 AU                 Incl. =  22.39218
      a =  3.4724073 AU   n = 0.15232041   P =   6.47 years

                   Epoch = 2028 Aug. 17.0 TT
    T = 2028 Aug.  9.23783 TT        Peri. = 199.98018
    e = 0.4766251                    Node  = 202.79615 2000.0
    q = 1.8208697 AU                 Incl. =  22.36768
      a =  3.4790924 AU   n = 0.15188159   P =   6.49 years

                   Epoch = 2035 Feb.  2.0 TT
    T = 2035 Feb.  3.36281 TT        Peri. = 199.84795
    e = 0.4755591                    Node  = 202.78295 2000.0
    q = 1.8274108 AU                 Incl. =  22.35073
      a =  3.4844931 AU   n = 0.15152862   P =   6.50 years

_________________
Uwe Pilz, Fachgruppen Kometen und Astrophysik/Algorithmen.
Oft benutzte Instrumente: Fujinon 16x70 FMT-SX-2, TMB Apo 105/650, Skywatcher Evostar 120/900 ED, Ninja Dobson 320/1440, Smartscope Dwarf-3