Fastener-sealing eave protection is very helpful at the eaves and the valleys. If No.30 ASTM Type ll or No.30 ASTM Type lV roofing felt is installed on the remainder of the roof with a continuous ventilation product on top of the felt and eave protection you will have a great roof. If using a Certi-LastÂ® or shake felt system product you only need the felt and eave protection. What is the CSSB recommended procedure for base or sheathing protection? No. 30 ASTM D226 Type ll or ASTM D4869 Type lV roofing felt.
Venus Earth Ratio (Venus/Earth) Semimajor axis (10 6 km) 108.21: 149.60: 0.723: Sidereal orbit period (days) 224.701: 365.256: 0.615: Tropical orbit period (days) 224.695: 365.242: 0.615: Perihelion (10 6 km) 107.48: 147.09: 0.731: Aphelion (10 6 km) 108.94: 152.10: 0.716: Synodic period (days) 583.92--Mean orbital velocity (km/s) 35.02: 29.78: 1.176: Max. orbital velocity (km/s) 35.26: 30.29: 1.164
Venus presents a thin crescent in telescopic views as it comes around to the near side between the Earth and the Sun and presents its new phase when it is between the Earth and the Sun. Since the planet has an atmosphere it can be seen at new in a telescope by the halo of light refracted around the planet. The full cycle from new to full to new again takes 584 days (the time it takes Venus to overtake the Earth in its orbit).