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Values of the solar parallax obtained by different methods
| Method | Solar Parallax | A.U. (km) |
|---|---|---|
| Radar | -- | 149,498,000* |
| Eros opposition | 8.790" ± 0.001" | 149,670,000 |
| Earth mass | 8.798" ± 0.0004" | 149,534,000 |
| Variation of Solar Parallax | 8.793" ± 0.003" | 149,619,000 |
| Abberation | 8.79" | 149,670,000 |
| Accepted value | 8.80" | 149,500,000 |
Relative intensity of radiation on the first of each month, without allowance for the effect of the atmosphere
| Date | It/I0 |
|---|---|
| 1 January | 1.0335 |
| 1 February | 1.0288 |
| 1 March | 1.0173 |
| 1 April | 1.0009 |
| 1 May | 0.9841 |
| 1 June | 0.9714 |
| 1 July | 0.9666 |
| 1 August | 0.9709 |
| 1 September | 0.9828 |
| 1 October | 0.9995 |
| 1 November | 1.0164 |
| 1 December | 1.0288 |
The relative intensity of radiation It/Io and the radius vector of the sun R.V. as a function of time.
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