Sun’s Motion and Sunspot Cycles

Figure 1: Path of sun’s center about the center of mass of the solar system, from 1968 to 2013

Path of sun's center about the center of mass of the solar system

Path of sun's center about the center of mass of the solar system

Source – Paul D. Jose: Sun’s motion and sunspots; The Astronomical Journal; Vol. 70, Nr. 3 (1965), Page 193-200. (Markings: Heeke) Unit of time (dot to dot): 200 days.

Table 1: Sun’s motion over time

The numbers along the curve of Fig. 1  refer to following dates:

1.   1977-02-26
JD  244  3200
6.    1988-02-09
JD  244  7200
11.   1999-01-22
JD    245  1200
16.    2010-01-04
JD   245  5200
2.   1979-05-07
244  4000
7.    1990-04-19
244  8000
12.   2001-04-01
245  2000
17.    2012-03-13
245  6000
3.   1981-07-15
244  4800
8.    1992-06-27
244  8800
13.    2003-06-09
245  2800
4.   1983-09-23
244  5600
9.    1994-09-05
244  9600
14.    2005-08-18
245  3600
5.   1985-12-01
244  6400
10.   1996-11-13
245  0400
15.    2007-10-26
245  4400

Homepage Heeke; 3-98 (updated 5-2004)

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