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Swan C/2025 R2 Comet Ephemeris
Not to be confused with SWAN C/2025 F2, Swan C/2025 R2 was discovered on 11 September 2025 by Vladmir Bezugley
using SOHO. It's orbital period is still uncertain but likely in the thousands of years (JPL gives it 22,553 yrs.). It is inclined at 4.47 degrees
to the ecliptic. with a .999 eccentricity. It's closest approach to the Sun occurred on September 12th 2025, one day after its discovery.
Spends nearly all of its time in Cancer, except for the 22 years near perihelion where it visits the other 11 signs. Most of us alive have
C/2025 R2 in mid to late tropical Cancer. Children born between 2013 and 2025 may have it in Leo.
Below are tables for Swan/C/2025 R2 for midnight UT
Swan/C/2025 R2 long term
1900 Jul 01 = 18Can41
1910 Jul 01 = 18Can59
1920 Jul 01 = 19Can22
1930 Jul 01 = 19Can45
1940 Jul 01 = 20Can11
1950 Jul 01 = 20Can39
1960 Jul 01 = 21Can11
1970 Jul 01 = 21Can48
1980 Jul 01 = 22Can34
1990 Jul 01 = 23Can31
2000 Jul 01 = 24Can50
2010 Jul 01 = 27Can01
2020 Jul 01 = 02Leo33
Perihelion(2025)
2030 Jul 01 = 24 Gem12
2040 Jul 01 = 00Can21
2050 Jul 01 = 02Can39
Cancer/Leo transition 2012-2019
2012 Sep 23 = 00Leo
2012 Nov 25 = 30Can
2013 Sep 01 = 00Leo
2013 Dec 18 = 30Can
2014 Aug 15 = 00Leo
2015 Jan 05 = 30Can
2015 Jul 31 = 00Leo
2016 Jan 21 = 30Can
2016 Jul 15 = 00Leo
2017 Feb 04 = 30Can
2017 Jun 30 = 00Leo
2018 Feb 22 = 30Can
2018 Jun 14 = 00Leo
2019 Mar 15 = 30Can
2019 May 24 = 00Leo
Perihelion positions
2024 Jul 01 = 12Leo25
2024 Oct 01 =28Leo19
2024 Oct 10/11 = 00Vir00
2024 Nov 01 = 03Vir26
2024 Dec 01 = 06Vir52
2025 Jan 01 = 07Vir23
2025 Feb 01 = 03Virg09
2025 Feb = 30Le00
2025 Mar 01 = 25 Leo21
2025 Apr 01 = 16Leo43
2025 May 01 = 13Leo22
2025 Jun 01 = 16Leo24
2025 Jul 01 = 25 Leo04
2025 Jul 13 = 00Vir00
2025 Aug 01 = 10Vir35
2025 Aug 25 = 00Lib00
2025 Sep 01 = 06Lib48
2025 Sep 11 = 18Lib01 (perihelion)
2025 Sep 15 = 22Lib38
2025 Sep 21 = 00Sco00
2025 Oct 01 = 13Sco25
2025 Oct 05 = 20Sco55
2025 Oct 09 = 00Sag00
2025 Oct 10 = 03Sag35
2025 Oct 12 = 10Sag04
2025 Oct 15 = 21Sag38
2025 Oct 17 = 00Cap00
2025 Oct 20 = 14Cap50
2025 Oct 23 = 00Aqu00
2025 Oct26 = 11Aqu54
2025 Oct 31 = 00Pis00
2025 Nov 05 = 09Pis42
2025 Nov 10 = 18Pis53
2025 Nov 23 = 00Ari00
2025 Dec 01 = 05Ari07
2025 Dec 15 = 11Ari53
2026 Jan 01 = 18Ari36
2026 Jan 15 = 23Ari36
2025 Feb 02 = 00Tau00
2026 Mar 01 = 08Tau21
2026 Mar 15 = 12Tau48
2026 Apr 01 = 17 Tau48
2026 May 01 = 26Tau17
2026 May 16 = 00Gem00
2026 Jun 01 = 04Gem10
2026 Jul 01 = 10Gem38
2026 Aug 01 =15 Gem40
2026 Oct 01 = 18Gem20
2026 Nov.15 = 13Gem00
2026 Dec 15 = 08Gem01
2027 Jan 01 = 05Gem 43
2027 Jul 01 = 17Gem18
2028 Jan 01 = 14Gem26
2028 Jul 01 = 20 Gem39
2029 Jan.01 = 18Gem31
2029 Jul 01 = 22Gem43
2030 Jul 01 = 24Gem12
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