Besselian epoch?

Did you mean | Travel | Economics | Finance | Marketing | Business | Culture | Geography | History | Life | Mathematics | Science | Society | Technology | New site added |

Add a link on the top of this Besselian epoch page Express submission by secure payment ! <table><tr><td> <form name="APform" action="http://www.allopass.com/cb/check.php4" method="POST"> <input type="hidden" name="CDOC_ID" value="297865"> <input type="hidden" name="CSITE_ID" value="111941"> <input type="hidden" name="LG_SCRIPT" value="uk"> <table border="0" cellpadding="0" cellspacing="0" width="300"> <tr> <td colspan="3"> <img src="http://www.allopass.com/imgweb/script/uk/cb_os_top.gif" alt=""> </td> </tr> <tr> <td width="157" valign="middle" bgcolor="White"> <font face="Arial,Helvetica" color="Black" size="11" Style="font-size: 12px;"> <b>Enter your access ticket</b> </font> </td> <td width="80" bgcolor="White"> <input type="text" size="10" maxlength="10" value="Ticket" name="CODE" onFocus="if (this.form.CODE.value=='Ticket') this.form.CODE.value=''" style="BACKGROUND-COLOR: #E7E7E7; BORDER-BOTTOM: #000080 1px solid; BORDER-LEFT: #000080 1px solid; BORDER-RIGHT: #000080 1px solid; BORDER-TOP: #000080 1px solid; COLOR: #000080; CURSOR: text; FONT-FAMILY: Arial; FONT-SIZE: 10pt; FONT-WEIGHT:bold; LETTER-SPACING: normal; WIDTH:85; TEXT-ALIGN=center;"> </td> <td width="58" align="center" bgcolor="White"> <input type="button" name="APsub" value="" onClick="this.form.submit(); this.form.APsub.disabled=true;" style="border:0px;margin:0px;padding:0px;width:48px; height:18px; background:url('http://www.allopass.com/img/bt_ok.png');"> </td> </tr> <tr><td colspan="3" width="300" height="13</font><br><img src="http://www.allopass.com/img/cb_bot.gif" alt=""></td></tr> </table> <input type="hidden" name="DATAS" value=""> </form> </td><td valign= op"><table border="0" cellpadding="0" cellspacing="0"> <tr> <td> <form name="cben" action="https://secure.allopass.com/cb/subscribe.php4" method="POST" target="DisplaySub"> <input type="hidden" name="START" value="1"> <input type="hidden" name="SDOC_ID" value="297865"> <input type="hidden" name="SSITE_ID" value="111941"> <input type="hidden" name="LANG" value="L_UK"> <input type="image" src="http://www.allopass.com/imgweb/script/uk/cb_subscribe_os.gif" alt="Ticket d'accès" onClick="window.open('','DisplaySub','toolbar=0,location=0,directories=0,status=1,menubar=0,scrollbars=1,resizable=1,width=600,height=570');" border = 0> </form> </td> </tr> </table></td></tr></table>

---

---

A Besselian epoch, named after the German mathematician and astronomer Friedrich Bessel (1784 - 1846), is an epoch that is based on a Besselian year, which is a tropical year measured at the point where the Sun's longitude is exactly 280°.

Since 1984, Besselian epochs have been superseded by Julian epochs. The current standard epoch is J2000.0, which is a Julian epoch.

Besselian epochs are calculated according to:

B = 1900.0 + (Julian date − 2415020.31352) / 365.242198781

The standard epoch that was in use before the current standard epoch (J2000.0) was B1950.0, a Besselian epoch.

What does Besselian epoch mean ? Search with Google !

Article on Besselian epoch, category, different spelling or sense