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Found 2 results

  1. Hello out there: I was hoping to find a few geeks who like to do their own numerical astro-programming, rather than only using the free software found on the Internet. I use PHP for my work, since it can handle massive astronomical computations far beyond the reach of Java script. It seems like doing your own astro-computing from scratch is a fading art, so I'm trying to keep it alive on the Internet. Right now, I'm concentrating on the moon. Not the Jean Meeus moon, but the NASA/JPL DE405 moon, which is much more accurate (theoretically to the nearest second and lunar distance to within ±0.01 km). If you like to study the moon, here are a few examples of the kind of programming I'm referring to above. http://neoprogrammics.com/index/moon/Lunar_Ephemeris_Statistics_Calculator.php This program computes the basic lunar ephemeris statistics and phase for any given moment. http://neoprogrammics.com/current_lunar_phase_4/ This virtual HD lunar telescope is ideal for cloudy nights when the moon is invisible and you still want to explore it anyway. It allows you to virtually view the moon from four sides - left, right, front and far side in HD detail (1500 x 1500 pixel resolution and at any selected relative phase angle from 0 to 360 degrees. Nothing too fancy yet, just an easy way to view the moon in fine detail. I may eventually add North/South polar views in the future - maybe. There's a lot of work involved, but so far the virtual lunar telescope is working out rather well. http://neoprogrammics.com/index/moon/Full_Year_Lunar_Events_Calculator.php This program displays a schedule of all lunar phases, apogees and perigees for any year from 1600 to 2200, adjusted for any time zone. It makes it very easy to find all blue moons, black moons, super-moons and months with 2 apogees or perigees. It takes approximately 8-10 seconds to compute a complete lunar events ephemeris for an entire year. All the programs are written in PHP and the lunar images were rendered by a FREEware rendering package called POV-Ray. The complete source code and graphics resources required to generate all these images or any user-defined custom view, is freely available as well, should anyone have an interest. Any opinions are welcome, especially from those scientifically inclined to do their own personal astro-computing from scratch. If anyone here has a PHP-based web site designed to perform astronomical computations, I'd like to hear from them and perhaps exchange some astronomy programming source code, ideas and tips. I also have PHP programs for computing very accurate ephemerides for the sun, all the planets, Pluto and 15 major asteroids. EXAMPLE: Below is an example output for 2016 from the Full Year Lunar Events Calculator program mentioned above. ******************************************************************************* BASIC LUNAR EVENTS FOR THE YEAR 2016 (UT) =============================================================================== January 2016 - Basic Lunar Events For Time Zone UT+00:00 Applied NASA Delta T = +00:01:10 JD TT Date Time UT DoW Lunar Event ---------------- ----------- -------- --- -------------------------------- 2457389.73025407 2016 Jan 02 05:30:24 Sat Last Quarter Moon 2457389.99593187 2016 Jan 02 11:52:59 Sat Apogee at 251206 mi = 404277 km 2457397.56365929 2016 Jan 10 01:30:30 Sun New Moon 2457402.59366625 2016 Jan 15 02:13:43 Fri Perigee at 229671 mi = 369619 km 2457404.47742367 2016 Jan 16 23:26:19 Sat First Quarter Moon 2457411.57422155 2016 Jan 24 01:45:43 Sun Full Moon 2457417.88258491 2016 Jan 30 09:09:45 Sat Apogee at 251377 mi = 404553 km There are two lunar apogees in January of 2016 in time zone UT+00:00. =============================================================================== February 2016 - Basic Lunar Events For Time Zone UT+00:00 Applied NASA Delta T = +00:01:10 JD TT Date Time UT DoW Lunar Event ---------------- ----------- -------- --- -------------------------------- 2457419.64510908 2016 Feb 01 03:27:47 Mon Last Quarter Moon 2457427.11114979 2016 Feb 08 14:38:53 Mon New Moon 2457429.61233212 2016 Feb 11 02:40:35 Thu Perigee at 226403 mi = 364360 km 2457433.82472513 2016 Feb 15 07:46:26 Mon First Quarter Moon 2457441.26458329 2016 Feb 22 18:19:50 Mon Full Moon 2457445.64524249 2016 Feb 27 03:27:59 Sat Apogee at 251893 mi = 405383 km =============================================================================== March 2016 - Basic Lunar Events For Time Zone UT+00:00 Applied NASA Delta T = +00:01:10 JD TT Date Time UT DoW Lunar Event ---------------- ----------- -------- --- -------------------------------- 2457449.46654068 2016 Mar 01 23:10:39 Tue Last Quarter Moon 2457456.58029536 2016 Mar 09 01:54:28 Wed New Moon 2457457.79501594 2016 Mar 10 07:03:39 Thu Perigee at 223389 mi = 359510 km 2457463.21113987 2016 Mar 15 17:02:52 Tue First Quarter Moon 2457471.00137190 2016 Mar 23 12:00:49 Wed Full Moon 2457473.09584941 2016 Mar 25 14:16:51 Fri Apogee at 252355 mi = 406125 km 2457479.13749048 2016 Mar 31 15:16:49 Thu Last Quarter Moon There are two last quarter moons in March of 2016 in time zone UT+00:00. =============================================================================== April 2016 - Basic Lunar Events For Time Zone UT+00:00 Applied NASA Delta T = +00:01:10 JD TT Date Time UT DoW Lunar Event ---------------- ----------- -------- --- -------------------------------- 2457485.97555150 2016 Apr 07 11:23:38 Thu New Moon 2457486.23380509 2016 Apr 07 17:35:31 Thu Perigee at 221931 mi = 357163 km 2457492.66699018 2016 Apr 14 03:59:18 Thu First Quarter Moon 2457500.17093164 2016 Apr 21 16:04:58 Thu Apogee at 252495 mi = 406351 km 2457500.72550971 2016 Apr 22 05:23:34 Fri Full Moon 2457508.64573447 2016 Apr 30 03:28:41 Sat Last Quarter Moon =============================================================================== May 2016 - Basic Lunar Events For Time Zone UT+00:00 Applied NASA Delta T = +00:01:10 JD TT Date Time UT DoW Lunar Event ---------------- ----------- -------- --- -------------------------------- 2457514.67669480 2016 May 06 04:13:16 Fri Perigee at 222344 mi = 357827 km 2457515.31294517 2016 May 06 19:29:28 Fri New Moon 2457522.21060564 2016 May 13 17:02:06 Fri First Quarter Moon 2457527.42169214 2016 May 18 22:06:04 Wed Apogee at 252235 mi = 405933 km 2457530.38580394 2016 May 21 21:14:23 Sat Full Moon 2457538.00911387 2016 May 29 12:11:57 Sun Last Quarter Moon =============================================================================== June 2016 - Basic Lunar Events For Time Zone UT+00:00 Applied NASA Delta T = +00:01:10 JD TT Date Time UT DoW Lunar Event ---------------- ----------- -------- --- -------------------------------- 2457542.95543030 2016 Jun 03 10:54:39 Fri Perigee at 224402 mi = 361140 km 2457544.62550516 2016 Jun 05 02:59:34 Sun New Moon 2457551.84093483 2016 Jun 12 08:09:47 Sun First Quarter Moon 2457555.00107087 2016 Jun 15 12:00:23 Wed Apogee at 251670 mi = 405024 km 2457559.96073255 2016 Jun 20 11:02:17 Mon Full Moon 2457567.26374081 2016 Jun 27 18:18:37 Mon Last Quarter Moon =============================================================================== July 2016 - Basic Lunar Events For Time Zone UT+00:00 Applied NASA Delta T = +00:01:10 JD TT Date Time UT DoW Lunar Event ---------------- ----------- -------- --- -------------------------------- 2457570.77895420 2016 Jul 01 06:40:32 Fri Perigee at 227411 mi = 365983 km 2457573.95982386 2016 Jul 04 11:00:59 Mon New Moon 2457581.53677331 2016 Jul 12 00:51:47 Tue First Quarter Moon 2457582.72587150 2016 Jul 13 05:24:05 Wed Apogee at 251201 mi = 404269 km 2457589.45674730 2016 Jul 19 22:56:33 Tue Full Moon 2457596.45889452 2016 Jul 26 22:59:38 Tue Last Quarter Moon 2457596.98478489 2016 Jul 27 11:36:55 Wed Perigee at 229698 mi = 369662 km There are two lunar perigees in July of 2016 in time zone UT+00:00. =============================================================================== August 2016 - Basic Lunar Events For Time Zone UT+00:00 Applied NASA Delta T = +00:01:10 JD TT Date Time UT DoW Lunar Event ---------------- ----------- -------- --- -------------------------------- 2457603.36505797 2016 Aug 02 20:44:31 Tue New Moon 2457610.50399701 2016 Aug 10 00:04:35 Wed Apogee at 251197 mi = 404262 km 2457611.26526116 2016 Aug 10 18:20:49 Wed First Quarter Moon 2457618.89424164 2016 Aug 18 09:26:32 Thu Full Moon 2457622.55544259 2016 Aug 22 01:18:40 Mon Perigee at 228074 mi = 367050 km 2457625.65414698 2016 Aug 25 03:40:48 Thu Last Quarter Moon =============================================================================== September 2016 - Basic Lunar Events For Time Zone UT+00:00 Applied NASA Delta T = +00:01:10 JD TT Date Time UT DoW Lunar Event ---------------- ----------- -------- --- -------------------------------- 2457632.87794313 2016 Sep 01 09:03:04 Thu New Moon 2457638.28184921 2016 Sep 06 18:44:42 Tue Apogee at 251689 mi = 405055 km 2457640.99306322 2016 Sep 09 11:48:51 Fri First Quarter Moon 2457648.29599287 2016 Sep 16 19:05:04 Fri Full Moon 2457650.20940284 2016 Sep 18 17:00:22 Sun Perigee at 224872 mi = 361896 km 2457654.91471884 2016 Sep 23 09:56:02 Fri Last Quarter Moon =============================================================================== October 2016 - Basic Lunar Events For Time Zone UT+00:00 Applied NASA Delta T = +00:01:10 JD TT Date Time UT DoW Lunar Event ---------------- ----------- -------- --- -------------------------------- 2457662.50868953 2016 Oct 01 00:11:21 Sat New Moon 2457665.96132602 2016 Oct 04 11:03:09 Tue Apogee at 252336 mi = 406096 km 2457670.69037558 2016 Oct 09 04:32:58 Sun First Quarter Moon 2457677.68349491 2016 Oct 16 04:23:04 Sun Full Moon 2457678.48262219 2016 Oct 16 23:33:49 Sun Perigee at 222364 mi = 357861 km 2457684.30202537 2016 Oct 22 19:13:45 Sat Last Quarter Moon 2457692.23563297 2016 Oct 30 17:38:09 Sun New Moon 2457693.31250065 2016 Oct 31 19:28:50 Mon Apogee at 252688 mi = 406662 km There are two new moons in October of 2016 in time zone UT+00:00. A second new moon within the same calendar month is called a 'Black Moon'. There are two lunar apogees in October of 2016 in time zone UT+00:00. =============================================================================== November 2016 - Basic Lunar Events For Time Zone UT+00:00 Applied NASA Delta T = +00:01:10 JD TT Date Time UT DoW Lunar Event ---------------- ----------- -------- --- -------------------------------- 2457700.32795017 2016 Nov 07 19:51:05 Mon First Quarter Moon 2457706.97378346 2016 Nov 14 11:21:05 Mon Perigee at 221524 mi = 356509 km 2457707.07860523 2016 Nov 14 13:52:01 Mon Full Moon 2457713.85717697 2016 Nov 21 08:33:10 Mon Last Quarter Moon 2457720.33980313 2016 Nov 27 20:08:09 Sun Apogee at 252621 mi = 406554 km 2457722.01344611 2016 Nov 29 12:18:12 Tue New Moon =============================================================================== December 2016 - Basic Lunar Events For Time Zone UT+00:00 Applied NASA Delta T = +00:01:10 JD TT Date Time UT DoW Lunar Event ---------------- ----------- -------- --- -------------------------------- 2457729.87788091 2016 Dec 07 09:02:59 Wed First Quarter Moon 2457735.47931956 2016 Dec 12 23:29:03 Mon Perigee at 222737 mi = 358461 km 2457736.50464604 2016 Dec 14 00:05:31 Wed Full Moon 2457743.58115567 2016 Dec 21 01:55:42 Wed Last Quarter Moon 2457747.74718345 2016 Dec 25 05:54:47 Sun Apogee at 252196 mi = 405870 km 2457751.78772595 2016 Dec 29 06:53:10 Thu New Moon ===============================================================================
  2. Hi from New York state, USA: Just joined this forum today. Looks very interesting. I specialize in writing advanced scientific programs in PHP to solve various numerical problems encountered in such things as astrophysics, astronomy, probability and statistics among other things. I was hoping to find at least a few people with similar interests who are also into astronomy and related PHP programming on the Internet. Hopefully, they haven't all gone extinct.
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