17 replies to this topic

[beggarly]

Searching for Sun Angle = -0.9000° over feature at 0.900°E   25.300°S
Moon librations, elongation and percent illumination calculated for a geocentric observer

 

                           Sun Angle       Sub-Solar Point     Librations                 Phase  
   Date      Time UT   Altitude  Azimuth    Colong    Lat.    Long.    Lat.     Elong.   %Illum.    Age
30/12/2022  10:26:59   -0.9000   91.8746   357.485  -1.310    7.405   3.098     94.662   54.193    7.007  *+
29/01/2023  00:51:04   -0.9000   92.1355   357.373  -1.546    7.431  -0.575     94.666   54.199    7.165  *+
27/02/2023  15:15:36   -0.9000   91.8897   357.478  -1.323    5.963  -3.944     93.370   53.073    7.340  *+
29/03/2023  05:12:40   -0.9000   91.2244   357.763  -0.722    3.544  -6.171     91.223   51.202    7.493  *+
27/04/2023  18:23:10   -0.9000   90.3456   358.139   0.072    0.680  -6.858     88.665   48.969    7.591  *+
27/05/2023  06:41:36   -0.9000   89.5003   358.500   0.836   -2.231  -5.973     86.051   46.689    7.617  *+
25/06/2023  18:15:17   -0.9000   88.9069   358.753   1.373   -4.832  -3.748     83.696   44.640    7.568  *+
25/07/2023  05:20:56   -0.9000   88.7117   358.837   1.549   -6.728  -0.624     81.948   43.124    7.451  *+
23/08/2023  16:20:56   -0.9000   88.9653   358.728   1.320   -7.477   2.757     81.183   42.461    7.280  *+
22/09/2023  03:39:52   -0.9000   89.6115   358.452   0.736   -6.701   5.547     81.720   42.923    7.083  *+
21/10/2023  15:40:08   -0.9000   90.4897   358.077  -0.058   -4.337   6.795     83.634   44.580    6.906  *+
20/11/2023  04:36:21   -0.9000   91.3595   357.705  -0.844   -0.892   5.822     86.602   47.161    6.798  *+
19/12/2023  18:29:15   -0.9000   91.9607   357.448  -1.388    2.673   2.766     89.909   50.047    6.790  *+

 

  * = Target feature on visible disk
  + = Azimuth of Sun within 5.00° of target (= 90.000°)

                      *** search completed ***

 

 Lunar X 2023.txt   1.92KB   145 downloads

 

LTVT download: https://github.com/f...i/LTVT Download

https://onedrive.liv...t&action=locate

 

Edited by beggarly, 10 November 2022 - 04:05 AM.

[Tom Hoffelder]

Thank you!  Time to work up the spreadsheet to see which ones are viewable from Maine!

[beggarly]

Visibility.

 

[67champ]

I just thought about doing the timings today...  Thanks for posting!

 

dana t

[MarionAZ]

Hello and thank you Beggarly for the Lunar X visibility information. I know I am missing some part of the equation when it comes to predicting whether I will be able to see the X from my location, but I can't figure out what I'm missing.  If I look at the twelve globes above, it looks like I have once chance only to see the X during 2023, and since I am in southeastern Arizona, my one chance is 29 January 2023. Could this be correct?

 

Thank you.

 

Marion

Sierra Vista, AZ

[beggarly]

Hello Marion,

 

I ran the predictions for the years 2023 to 2025 for location Tucson, Arizona. The Moon will be above the horizon while the Sun is below the horizon on the ten dates marked with %. There are also dates on which the moon is above the horizon during daylight.

 

Searching for Sun Angle = -0.9000° over feature at 0.900°E   25.300°S
Librations and Moon/Sun positions calculated for observer at 110.930°W  32.210°N  0 m

 

                           Sun Angle       Sub-Solar Point      Librations      Center of Moon      Center of Sun
   Date      Time UT   Altitude  Azimuth    Colong    Lat.     Long.   Lat.      Alt.     Azi.       Alt.     Azi
29/01/2023  00:51:04   -0.9000   92.1355   357.373  -1.546    7.502  -0.280    70.876   145.210    -0.355   248.756  *+%
27/02/2023  15:15:36   -0.9000   91.8897   357.478  -1.323    6.207  -3.174   -28.614    25.574    15.922   110.908  *+
29/03/2023  05:12:40   -0.9000   91.2244   357.763  -0.722    2.937  -5.906    43.795   278.922   -42.063   311.253  *+%
27/04/2023  18:23:10   -0.9000   90.3456   358.139   0.072    1.522  -6.519    -3.211    59.684    67.396   140.625  *+
27/05/2023  06:41:36   -0.9000   89.5003   358.500   0.836   -2.792  -5.309    16.661   277.144   -35.710   348.722  *+%
25/06/2023  18:15:17   -0.9000   88.9069   358.753   1.373   -3.946  -3.576    -9.464    80.252    71.996   114.901  *+
25/07/2023  05:20:56   -0.9000   88.7117   358.837   1.549   -7.240   0.126    11.164   251.242   -29.561   324.623  *+%
23/08/2023  16:20:56   -0.9000   88.9653   358.728   1.320   -6.749   2.905   -38.333    91.749    42.648   105.282  *+
22/09/2023  03:39:52   -0.9000   89.6115   358.452   0.736   -7.246   6.297    15.466   221.192   -29.402   291.432  *+%
21/10/2023  15:40:08   -0.9000   90.4897   358.077  -0.058   -3.844   7.050   -55.834    91.724    24.306   121.776  *+
20/11/2023  04:36:21   -0.9000   91.3595   357.705  -0.844   -1.716   6.247    20.545   230.630   -53.633   280.731  *+%
19/12/2023  18:29:15   -0.9000   91.9607   357.448  -1.388    3.231   3.540   -14.439    84.952    33.025   165.873  *+

 

 

18/01/2024  09:02:19   -0.9000   92.1019   357.388  -1.515    4.560  -0.961   -13.597   293.851   -67.130    64.976  *+
16/02/2024  23:45:29   -0.9000   91.7383   357.543  -1.187    7.319  -4.512    64.166   101.350    16.020   243.795  *+
17/03/2024  14:05:29   -0.9000   90.9897   357.863  -0.510    7.188  -5.829   -29.973     3.439     6.558    95.354  *+
16/04/2024  03:37:15   -0.9000   90.0872   358.249   0.306    5.639  -6.401    67.337   257.320   -21.333   298.187  *+%
15/05/2024  16:10:19   -0.9000   89.2858   358.591   1.030    4.287  -4.511   -32.249    39.842    45.650    95.248  *+
14/06/2024  03:48:51   -0.9000   88.7926   358.802   1.476    0.477  -1.685    46.403   237.114   -14.379   310.073  *+%
13/07/2024  14:48:40   -0.9000   88.7254   358.831   1.537   -1.884   1.135   -55.585    51.374    27.573    80.573  *+
12/08/2024  01:33:32   -0.9000   89.0986   358.671   1.199   -4.990   4.617    36.709   196.067     6.872   283.259  *+
10/09/2024  12:31:24   -0.9000   89.8225   358.362   0.545   -6.765   6.158   -84.437   356.184    -7.837    79.457  *+
10/10/2024  00:09:41   -0.9000   90.7154   357.981  -0.262   -7.199   7.658    27.975   171.772     9.111   256.010  *+
08/11/2024  12:48:40   -0.9000   91.5344   357.630  -1.002   -6.384   5.838   -80.399   349.726   -12.740   101.996  *+
08/12/2024  02:33:53   -0.9000   92.0354   357.416  -1.455   -4.648   3.162    41.817   211.433   -27.870   259.398  *+%


06/01/2025  17:11:14   -0.9000   92.0551   357.408  -1.473   -0.494  -0.615   -20.744    68.814    26.135   144.180  *+
05/02/2025  08:09:25   -0.9000   91.5818   357.610  -1.045    1.575  -4.690    -1.195   294.711   -72.086    25.579  *+
06/03/2025  22:50:42   -0.9000   90.7655   357.959  -0.307    6.067  -6.544    53.161    84.951    30.254   240.431  *+
05/04/2025  12:43:55   -0.9000   89.8575   358.347   0.513    7.100  -5.380   -29.168   339.854    -5.527    78.990  *+
05/05/2025  01:33:02   -0.9000   89.1166   358.664   1.183    7.481  -3.674    73.163   150.603     6.009   285.479  *+
03/06/2025  13:18:38   -0.9000   88.7340   358.827   1.529    5.980  -0.124   -52.248   347.140    11.052    70.396  *+
03/07/2025  00:15:28   -0.9000   88.7968   358.800   1.472    3.891   2.987    46.659   153.953    26.754   281.453  *+
01/08/2025  10:48:32   -0.9000   89.2825   358.593   1.033    0.298   5.497   -57.330   287.032   -20.980    50.928  *+
30/08/2025  21:28:43   -0.9000   90.0698   358.257   0.322   -1.534   7.151    13.975   134.510    52.765   237.664  *+
29/09/2025  08:47:19   -0.9000   90.9597   357.876  -0.483   -5.392   6.938   -39.433   257.305   -53.137    41.256  *+
28/10/2025  21:08:52   -0.9000   91.7119   357.554  -1.163   -6.005   5.905    11.284   129.959    35.904   217.358  *+
27/11/2025  10:43:08   -0.9000   92.1022   357.387  -1.516   -7.776   2.334   -56.714   293.876   -41.934    90.508  *+
27/12/2025  01:19:13   -0.9000   91.9990   357.432  -1.422   -6.929  -1.212    55.962   195.780   -11.108   249.317  *+%

 

  * = Target feature on visible disk
  + = Azimuth of Sun within 5.00° of target (= 90.000°)
  % = Moon above horizon/Sun below horizon

                      *** search completed ***

 

 Lunar X Tucson.txt   4.99KB   33 downloads

 

https://github.com/f...i/LTVT Download

 

You can use a planetarium program to check if the moon will be above the horizon.

 

http://www.astrosurf...glish/index.htm

https://www.ap-i.net...php?id=en/start

http://stellarium.org/

 

Good luck,

Hendrik

Edited by beggarly, 09 January 2023 - 06:44 AM.

[MarionAZ]

Hendrik,

 

Many thanks for running the predictions for Tucson for those three years. I am relieved to know I am wrong about only having one chance in the year 2023! I mistakenly assumed the 12 globes were showing the visibility path for 2023 - obviously I need to gain a better understanding of the information provided in this post. I have downloaded Stellarium and am working my way through the list to ensure the Moon is above the horizon for my area so I may take advantage of any opportunity.

 

Thanks to you and Dana, last year I was able to see the Lunar X on one occasion, but now I think that was dumb luck on my part. The next three years I will be prepared.

 

Marion 

[MarionAZ]

Hello Hendrik. I made a foolish mistake. 29 Jan 2023 00:51 UTC would have been minus 7 hours for me. So Lunar X would have been visible to me on 28 Jan 2023 at 17:51 Mountain Standard Time. Instead, tonight (29 Jan) I dragged my telescope out tonight and waited, and waited, no Lunar X. Okay, I will find the next best date/time and hope for clear skies. Tonight would have been very good viewing. Thank you again for running the predictions for me. 

 

Marion 

[MarionAZ]

Hendrik,

 

Thank you again for the Tucson, Arizona predictions. I have seen the Lunar  X three times so far this year and hopefully again on September 22.

 

I appreciate you running the data!

 

Marion

[groom]

The time listed is 03:39 UT on September 22, which for Tucson, is TONIGHT, the evening of September 21.

[MarionAZ]

Many thanks!

 

My calendar is now annotated for 21/9/2023 at 20:39.

 

Marion

[67champ]

Correct.  TONIGHT!

 

dt

[RMay]

Here ya go… edited… I think I got them. 

 

Ron

Attached Thumbnails

• 

Edited by RMay, 22 September 2023 - 01:20 PM.

[MarionAZ]

Thrilling every time I see it.  At about 2042 the Moon was freed from the clouds for about five or six minutes and I got a nice look through an Orion 8" newtonian which I have mounted on a bowling ball, enjoyed it very much. Appreciate you catching my error and notifying me.

 

Marion

[MarionAZ]

Nice image of the V and the X, thank you for posting!

 

Marion

[NA3T]

Viking 1,

​

How did you make the disks of the Earth?

 

Thanks Joe

​

[beggarly]

Viking 1,

​

How did you make the disks of the Earth?

 

Thanks Joe

​

It's an option in the 'Tools' menu.

 

 

"Show Earth viewed from Moon: changes the image in the Main Window to one showing a view of the Earth centered on the point at which the Moon is directly overhead, based on the date and time currently specified at the top of the window. This image shows at a glance all parts of the world from which the Moon is then visible, and red and blue lines separate the sunlit and dark parts of the Earth in the same way as they do for lunar images. The mouse readout changes to one giving the Moon observing parameters for a sea-level observer at the current mouse point on Earth, and most of the right-click image options are disabled. To return to the previous lunar image, simply click Texture."

[MarionAZ]

Happy New Year to all! I have my calendar marked and hope 2024 brings us all clear views of Lunar X (and V)!

 

Marion