RECON: TNO occultation with 01XR254

Event between 01XR254 and star GA1080:03088116 with event index number of 1068632

Geocentric closest approach at 2022/02/16 09:36:50 UTC

J2000 position of star is 08:27:46.8 +18:03:18
Equinox of date position of star is 08:28:52.5 +17:59:26
Stellar brightness G=14.9, use SENSEUP=128
Star is 20 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=22.2

[RECON map]
TNO is 43.9 AU from the Sun and 42.9 AU from the Earth.
The TNO is moving 23.5 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 142 seconds.
The 1-sigma cross-track error in the shadow position is 1899 km.
The sky-plane scale is 31142.9 km/arcsec.

The TNO has an absolute magnitude Hv=5.8
Diameter=413.1 km assuming a 5% albedo -- 17.6 sec chord
Diameter=168.6 km assuming a 30% albedo -- 7.2 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 01XR254, (2022/02/16 09:37UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:40.1 +27:58:16  1.1 13.95  31
20 Cnc         08:24:37.7 +18:15:35  5.9  1.09  21
PPM 125252     08:27:10.5 +17:45:36  8.5  0.50  21
PPM 125313     08:30:02.9 +18:17:39  9.1  0.39  20
01XR254        08:29:02.5 +17:58:50 14.9        20
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 13.5 km RECON observability=1.0 and success probability=12.1%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Kelowna	09:35:32	-48.6	Dark	Up	42.7	243.8	Up	09:23:15 - 09:47:50	3043
Summerland	09:35:32	-49.0	Dark	Up	43.0	243.8	Up	09:23:15 - 09:47:50	3015
Penticton	09:35:31	-49.0	Dark	Up	43.0	243.9	Up	09:23:14 - 09:47:49	3013
Okanagan Falls	09:35:31	-49.2	Dark	Up	43.1	244.1	Up	09:23:14 - 09:47:49	2999
Oliver	09:35:31	-49.3	Dark	Up	43.1	244.2	Up	09:23:13 - 09:47:48	2988
Anarchist Mountain Observatory	09:35:29	-49.4	Dark	Up	43.1	244.6	Up	09:23:12 - 09:47:47	2981
Oroville	09:35:29	-49.5	Dark	Up	43.2	244.6	Up	09:23:12 - 09:47:47	2974
Tonasket	09:35:29	-49.6	Dark	Up	43.3	244.8	Up	09:23:11 - 09:47:46	2957
Okanogan	09:35:27	-50.0	Dark	Up	43.5	244.9	Up	09:23:10 - 09:47:45	2929
Brewster	09:35:28	-50.3	Dark	Up	43.7	244.9	Up	09:23:10 - 09:47:45	2903
Manson/Chelan	09:35:27	-50.6	Dark	Up	44.0	244.7	Up	09:23:10 - 09:47:45	2878
Entiat	09:35:27	-50.8	Dark	Up	44.2	244.8	Up	09:23:09 - 09:47:44	2860
Wenatchee	09:35:26	-51.1	Dark	Up	44.4	245.0	Up	09:23:09 - 09:47:44	2838
Ellensburg	09:35:25	-51.5	Dark	Up	44.7	245.1	Up	09:23:08 - 09:47:43	2801
Pasco	09:35:20	-51.6	Dark	Up	44.1	247.2	Up	09:23:03 - 09:47:38	2787
PNWRO	09:35:19	-51.7	Dark	Up	44.0	247.6	Up	09:23:01 - 09:47:36	2776
Yakima	09:35:25	-51.8	Dark	Up	44.9	245.4	Up	09:23:07 - 09:47:42	2770
Niwot	09:34:32	-48.5	Dark	Up	35.9	263.7	Up	09:22:15 - 09:46:50	2767
Toppenish/White Swan	09:35:23	-52.0	Dark	Up	44.8	245.8	Up	09:23:06 - 09:47:41	2759
SwRI	09:34:32	-48.7	Dark	Up	36.0	263.7	Up	09:22:15 - 09:46:50	2756
George/Umatilla	09:35:19	-51.9	Dark	Up	44.4	247.3	Up	09:23:01 - 09:47:36	2756
Goldendale	09:35:22	-52.6	Dark	Up	45.3	245.9	Up	09:23:05 - 09:47:40	2704
The Dalles	09:35:23	-52.9	Dark	Up	45.7	245.7	Up	09:23:05 - 09:47:40	2676
Maupin	09:35:21	-53.2	Dark	Up	45.8	246.2	Up	09:23:03 - 09:47:38	2648
Madras/Culver	09:35:19	-53.7	Dark	Up	46.0	246.7	Up	09:23:02 - 09:47:37	2604
Redmond	09:35:18	-54.0	Dark	Up	46.2	247.0	Up	09:23:01 - 09:47:36	2575
Sisters	09:35:19	-54.2	Dark	Up	46.4	246.6	Up	09:23:01 - 09:47:36	2564
Bend	09:35:18	-54.3	Dark	Up	46.4	247.0	Up	09:23:01 - 09:47:36	2554
Oregon Observatory	09:35:18	-54.5	Dark	Up	46.5	247.1	Up	09:23:00 - 09:47:35	2536
La Pine/Gilchrist	09:35:17	-54.7	Dark	Up	46.7	247.2	Up	09:22:59 - 09:47:34	2518
North Lake	09:35:14	-54.8	Dark	Up	46.4	248.2	Up	09:22:57 - 09:47:32	2502
Paisley	09:35:12	-55.1	Dark	Up	46.4	249.1	Up	09:22:54 - 09:47:29	2470
Lakeview	09:35:10	-55.4	Dark	Up	46.4	249.8	Up	09:22:53 - 09:47:28	2436
Chiloquin	09:35:14	-55.7	Dark	Up	47.3	248.0	Up	09:22:57 - 09:47:32	2418
Klamath Falls	09:35:13	-56.0	Dark	Up	47.4	248.4	Up	09:22:56 - 09:47:31	2394
Cedarville	09:35:07	-55.9	Dark	Up	46.5	250.6	Up	09:22:50 - 09:47:25	2389
Tulelake	09:35:12	-56.1	Dark	Up	47.3	248.9	Up	09:22:55 - 09:47:30	2381
Fall River/Burney	09:35:09	-56.8	Dark	Up	47.6	249.9	Up	09:22:52 - 09:47:27	2310
Susanville	09:35:06	-57.0	Dark	Up	47.2	251.2	Up	09:22:48 - 09:47:23	2283
Gimple	09:35:05	-57.3	Dark	Up	47.5	251.3	Up	09:22:47 - 09:47:22	2253
Greenville	09:35:05	-57.4	Dark	Up	47.6	251.3	Up	09:22:47 - 09:47:22	2250
Portola	09:35:03	-57.4	Dark	Up	47.3	252.0	Up	09:22:45 - 09:47:20	2239
Reno	09:35:01	-57.3	Dark	Up	46.9	252.9	Up	09:22:43 - 09:47:18	2238
Quincy	09:35:05	-57.5	Dark	Up	47.6	251.5	Up	09:22:47 - 09:47:22	2234
Yerington	09:34:57	-57.4	Dark	Up	46.6	254.0	Up	09:22:39 - 09:47:14	2214
Carson City	09:34:59	-57.6	Dark	Up	47.0	253.3	Up	09:22:42 - 09:47:17	2209
Tonopah	09:34:50	-57.1	Dark	Up	45.4	256.5	Up	09:22:32 - 09:47:07	2202
Hawthorne	09:34:54	-57.5	Dark	Up	46.3	254.9	Up	09:22:37 - 09:47:12	2193
Gardnerville	09:34:58	-57.7	Dark	Up	47.1	253.5	Up	09:22:41 - 09:47:16	2191
Indian Springs	09:34:42	-57.2	Dark	Up	44.5	259.1	Up	09:22:24 - 09:46:59	2131
Lee Vining	09:34:54	-58.2	Dark	Up	46.9	255.1	Up	09:22:36 - 09:47:11	2130
Beatty	09:34:45	-57.6	Dark	Up	45.3	258.0	Up	09:22:28 - 09:47:03	2121
Henderson	09:34:38	-57.2	Dark	Up	44.1	260.1	Up	09:22:21 - 09:46:56	2111
Bishop	09:34:50	-58.2	Dark	Up	46.5	256.3	Up	09:22:33 - 09:47:08	2104
Patrick	09:34:35	-56.9	Dark	Up	43.3	261.5	Up	09:22:17 - 09:46:52	2097
DCO	09:34:32	-56.6	Dark	Up	42.8	262.3	Up	09:22:15 - 09:46:50	2096
Kingman/Dolan Springs	09:34:34	-57.1	Dark	Up	43.5	261.6	Up	09:22:17 - 09:46:52	2071
Searchlight/Boulder City	09:34:37	-57.5	Dark	Up	44.1	260.7	Up	09:22:20 - 09:46:55	2064
Lone Pine	09:34:48	-58.6	Dark	Up	46.4	257.3	Up	09:22:31 - 09:47:06	2051
Laughlin/Bullhead City	09:34:35	-57.5	Dark	Up	43.9	261.3	Up	09:22:18 - 09:46:53	2051
Mohave Valley	09:34:34	-57.6	Dark	Up	44.0	261.5	Up	09:22:17 - 09:46:52	2028
Lake Havasu City	09:34:33	-57.7	Dark	Up	43.8	262.1	Up	09:22:15 - 09:46:50	2003
Parker	09:34:31	-57.9	Dark	Up	43.8	262.4	Up	09:22:13 - 09:46:48	1974
Blythe	09:34:30	-58.4	Dark	Up	44.2	262.7	Up	09:22:13 - 09:46:48	1918
Idyllwild	09:34:36	-59.7	Dark	Up	45.9	261.2	Up	09:22:19 - 09:46:54	1852
CPSLO	09:34:50	-61.0	Dark	Up	48.7	256.6	Up	09:22:33 - 09:47:08	1850
Calipatria	09:34:31	-59.3	Dark	Up	45.0	262.6	Up	09:22:14 - 09:46:49	1842
Yuma	09:34:28	-59.0	Dark	Up	44.3	263.6	Up	09:22:11 - 09:46:46	1837
Wildwood	09:34:41	-60.7	Dark	Up	47.3	259.5	Up	09:22:24 - 09:46:59	1816

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 01XR254, (2022/02/16 09:37UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1 13.95  31
20 Cnc         08:23:21.8 +18:19:55  5.9  1.09  21
PPM 125252     08:25:54.8 +17:50:00  8.5  0.50  21
PPM 125313     08:28:47.1 +18:22:08  9.1  0.39  20
01XR254        08:27:46.8 +18:03:18 14.9        20
Positions are for J2000

Event circumstances last updated at 2019/03/16 00:25:46 UT

RECON