RECON: TNO occultation with 504555

Event between (504555) 08SO266 and star GA0900:00317694 with event index number of 2543532

Geocentric closest approach at 2028/12/08 06:54:12 UTC

J2000 position of star is 03:42:24.8 +00:29:27
Equinox of date position of star is 03:43:38.6 +00:33:57
Stellar brightness G=12.6, use SENSEUP=16 with the MallinCam and and exposure time of 250 milli-seconds with the QHY174 camera.
Star is 99 degrees from the moon. Moon is 61% illuminated.
Apparent brightness V=22.0

[RECON map]
Object is 36.1 AU from the Sun and 35.2 AU from the Earth.
Apparent velocity is 23.0 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 102 seconds.
The 1-sigma cross-track error in the shadow position is 1365 km.
The sky-plane scale is 25529.8 km/arcsec.

The object has an absolute magnitude Hv=6.4
Diameter=309.0 km assuming a 5% albedo -- 13.8 sec chord
Diameter=126.2 km assuming a 30% albedo -- 5.6 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 504555, (2028/12/08 06:58UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:35.1 +16:33:55  0.8 20.74  84
Menkar         03:03:47.8 +04:12:06  2.5 10.65 109
10 Tau         03:38:21.3 +00:29:33  4.3  1.39 100
PPM 146889     03:47:14.0 +00:42:21  8.5  0.84  98
PPM 146853     03:44:54.0 +00:32:06  8.9  0.25  99
PPM 146830     03:43:24.7 +00:37:55 11.4  0.13  99
504555         03:43:54.1 +00:34:53 12.6        99
Positions are for equinox of date

This table contains the target star visibility for the RECON network. The observing range has been set to a maximum of 5.0 sigma about the mid-time.
The median site spacing is 27.8 km RECON observability=1.0 and success probability=0.0%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Sleaford	06:52:58	-60.7	Dark	Up	35.9	204.1	Up	06:44:00 - 07:01:57	8902
Kamloops	06:53:39	-59.8	Dark	Up	39.6	186.5	Up	06:44:41 - 07:02:38	8884
Kelowna	06:53:37	-60.7	Dark	Up	40.4	187.7	Up	06:44:38 - 07:02:35	8820
Peachland	06:53:38	-60.8	Dark	Up	40.5	187.4	Up	06:44:39 - 07:02:36	8813
Summerland	06:53:37	-60.9	Dark	Up	40.6	187.5	Up	06:44:39 - 07:02:36	8802
Penticton	06:53:37	-61.0	Dark	Up	40.7	187.7	Up	06:44:39 - 07:02:36	8796
Oliver	06:53:37	-61.3	Dark	Up	41.1	187.7	Up	06:44:38 - 07:02:35	8770
Anarchist Mountain Observatory	06:53:36	-61.5	Dark	Up	41.2	188.0	Up	06:44:38 - 07:02:35	8757
Victoria	06:53:49	-60.6	Dark	Down	41.9	182.7	Up	06:44:50 - 07:02:47	8746
Okanogan	06:53:37	-62.0	Dark	Up	41.9	187.8	Up	06:44:38 - 07:02:35	8710
Brewster	06:53:38	-62.2	Dark	Up	42.2	187.5	Up	06:44:39 - 07:02:36	8690
Manson/Chelan	06:53:39	-62.3	Dark	Up	42.4	187.1	Up	06:44:40 - 07:02:37	8677
Wenatchee	06:53:39	-62.6	Dark	Up	42.9	186.9	Up	06:44:41 - 07:02:38	8642
Ellensburg	06:53:40	-62.9	Dark	Up	43.3	186.6	Up	06:44:42 - 07:02:39	8612
Yakima	06:53:40	-63.2	Dark	Up	43.7	186.7	Up	06:44:42 - 07:02:39	8580
Toppenish/White Swan	06:53:40	-63.5	Dark	Up	43.9	186.9	Up	06:44:41 - 07:02:38	8563
PNWRO	06:53:34	-64.3	Dark	Up	44.1	189.0	Up	06:44:36 - 07:02:33	8524
The Dalles	06:53:42	-63.8	Dark	Up	44.7	185.9	Up	06:44:44 - 07:02:41	8507
Maupin	06:53:42	-64.2	Dark	Up	45.2	186.1	Up	06:44:43 - 07:02:40	8473
Sisters	06:53:43	-64.7	Dark	Up	46.1	185.5	Up	06:44:45 - 07:02:42	8407
Bend	06:53:43	-65.0	Dark	Up	46.3	185.9	Up	06:44:44 - 07:02:41	8386
Oregon Observatory	06:53:43	-65.1	Dark	Up	46.5	185.7	Up	06:44:45 - 07:02:42	8373
Chiloquin	06:53:45	-65.9	Dark	Up	47.8	185.3	Up	06:44:46 - 07:02:43	8268
Klamath Falls	06:53:45	-66.2	Dark	Up	48.1	185.4	Up	06:44:46 - 07:02:43	8239
Cedarville	06:53:39	-67.5	Dark	Up	48.7	187.9	Up	06:44:40 - 07:02:37	8169
Fall River/Burney	06:53:43	-67.3	Dark	Up	49.3	186.1	Up	06:44:45 - 07:02:42	8137
Greenville	06:53:42	-68.2	Dark	Up	50.1	186.9	Up	06:44:43 - 07:02:40	8057
Gimple	06:53:41	-68.3	Dark	Up	50.1	187.0	Up	06:44:43 - 07:02:40	8056
Quincy	06:53:42	-68.4	Dark	Up	50.3	187.0	Up	06:44:43 - 07:02:40	8039
Portola	06:53:40	-68.7	Dark	Up	50.4	187.7	Up	06:44:42 - 07:02:39	8025
Reno	06:53:38	-69.2	Dark	Up	50.6	188.8	Up	06:44:39 - 07:02:36	7997
Carson City	06:53:38	-69.5	Dark	Up	51.0	188.9	Up	06:44:39 - 07:02:36	7966
Dunrhomin	06:52:46	-72.5	Dark	Up	46.3	209.6	Up	06:43:47 - 07:01:44	7956
Gardnerville	06:53:37	-69.7	Dark	Up	51.2	189.0	Up	06:44:39 - 07:02:36	7944
Yerington	06:53:36	-70.0	Dark	Up	51.1	189.9	Up	06:44:37 - 07:02:34	7944
Nikitin	06:52:46	-72.7	Dark	Up	46.5	209.7	Up	06:43:47 - 07:01:44	7940
CU-SBO	06:52:46	-72.8	Dark	Up	46.5	209.6	Up	06:43:48 - 07:01:45	7935
Hawthorne	06:53:34	-70.6	Dark	Up	51.5	190.8	Up	06:44:35 - 07:02:32	7900
Lee Vining	06:53:36	-70.8	Dark	Up	52.1	190.2	Up	06:44:37 - 07:02:34	7854
Bishop	06:53:32	-71.6	Dark	Up	52.6	191.5	Up	06:44:34 - 07:02:31	7795
Beatty	06:53:27	-72.8	Dark	Up	52.7	194.2	Up	06:44:28 - 07:02:25	7741
Patrick	06:53:15	-75.3	Dark	Up	53.5	199.4	Up	06:44:17 - 07:02:14	7584
Laughlin/Bullhead City	06:53:18	-75.2	Dark	Up	53.9	198.4	Up	06:44:19 - 07:02:16	7566
Lake Havasu City	06:53:17	-75.9	Dark	Up	54.5	199.1	Up	06:44:18 - 07:02:15	7502
Wildwood	06:53:34	-73.8	Dark	Up	55.8	192.1	Up	06:44:35 - 07:02:32	7499
Idyllwild	06:53:26	-75.2	Dark	Up	55.8	195.4	Up	06:44:28 - 07:02:25	7451
George/Scottsdale	06:53:07	-77.6	Dark	Up	54.5	203.5	Up	06:44:09 - 07:02:06	7411
Calipatria	06:53:21	-76.3	Dark	Up	56.1	197.7	Up	06:44:23 - 07:02:20	7384
Yuma	06:53:18	-77.1	Dark	Up	56.3	199.4	Up	06:44:19 - 07:02:16	7336

Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.

Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.

Star training set for 504555, (2028/12/08 06:58UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 20.74  84
Menkar         03:02:16.8 +04:05:21  2.5 10.65 109
10 Tau         03:36:52.0 +00:23:55  4.3  1.39 100
PPM 146889     03:45:44.6 +00:37:02  8.5  0.84  98
PPM 146853     03:43:24.7 +00:26:42  8.9  0.25  99
PPM 146830     03:41:55.3 +00:32:28 11.4  0.13  99
504555         03:42:24.8 +00:29:27 12.6        99
Positions are for J2000

Event circumstances last updated at 2023/12/04 04:23:52 UT

RECON