RECON: TNO occultation with 91554

Event between (91554) 99RZ215 and star GA1120:00091059 with event index number of 1771062

Geocentric closest approach at 2027/11/07 05:17:45 UTC

J2000 position of star is 00:42:58.1 +22:50:22
Equinox of date position of star is 00:44:03.7 +22:57:08
Stellar brightness G=13.9, use SENSEUP=64
Star is 56 degrees from the moon. Moon is 58% illuminated.
TNO apparent brightness V=26.1

[RECON map]
TNO is 40.7 AU from the Sun and 39.8 AU from the Earth.
The TNO is moving 22.1 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 179 seconds.
The 1-sigma cross-track error in the shadow position is 3941 km.
The sky-plane scale is 28857.0 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=166.0 km assuming a 5% albedo -- 2.7 sec chord
Diameter=67.8 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 91554, (2027/11/07 05:18UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:22.9 +45:22:52  1.3 53.40  59
Algenib        00:14:40.4 +15:20:18  2.8 10.39  46
55 Psc         00:41:23.9 +21:35:26  6.4  1.57  55
PPM 090108     00:46:41.7 +23:44:34  7.2  0.91  57
PPM 090071     00:43:51.2 +22:59:05  9.1  0.14  56
91554          00:44:26.7 +22:59:30 13.9        56
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 22.7 km RECON observability=1.0 and success probability=11.0%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Victoria	05:17:09	-44.1	Dark	Up	63.4	161.9	Up	05:02:09 - 05:32:09	-2308
Clarence Fulton	05:16:54	-45.3	Dark	Up	62.4	170.8	Up	05:01:54 - 05:31:54	-2321
Peachland	05:16:56	-45.4	Dark	Up	62.8	169.7	Up	05:01:56 - 05:31:56	-2346
Kelowna	05:16:55	-45.5	Dark	Up	62.7	170.3	Up	05:01:55 - 05:31:55	-2348
Summerland	05:16:56	-45.5	Dark	Up	63.0	169.8	Up	05:01:56 - 05:31:56	-2362
Penticton	05:16:56	-45.6	Dark	Up	63.0	170.1	Up	05:01:56 - 05:31:56	-2372
Oliver	05:16:56	-45.8	Dark	Up	63.4	169.9	Up	05:01:56 - 05:31:56	-2401
Anarchist Mountain Observatory	05:16:57	-46.1	Dark	Up	63.6	170.3	Up	05:01:57 - 05:31:57	-2422
Tonasket	05:16:58	-46.2	Dark	Up	63.9	170.0	Up	05:01:58 - 05:31:58	-2446
Okanogan	05:16:59	-46.3	Dark	Up	64.2	169.6	Up	05:01:59 - 05:31:59	-2468
Brewster	05:17:00	-46.4	Dark	Up	64.4	169.1	Up	05:02:00 - 05:32:00	-2484
Manson/Chelan	05:17:02	-46.3	Dark	Up	64.6	168.2	Up	05:02:02 - 05:32:02	-2487
Entiat	05:17:02	-46.4	Dark	Up	64.8	168.0	Up	05:02:02 - 05:32:02	-2503
Wenatchee	05:17:03	-46.4	Dark	Up	65.0	167.7	Up	05:02:03 - 05:32:03	-2521
Ellensburg	05:17:05	-46.5	Dark	Up	65.4	167.0	Up	05:02:05 - 05:32:05	-2547
Yakima	05:17:06	-46.7	Dark	Up	65.8	166.8	Up	05:02:06 - 05:32:06	-2581
Toppenish/White Swan	05:17:06	-47.0	Dark	Up	66.0	167.0	Up	05:02:06 - 05:32:06	-2606
Goldendale	05:17:08	-47.0	Dark	Up	66.5	165.8	Up	05:02:08 - 05:32:08	-2636
The Dalles	05:17:10	-46.9	Dark	Up	66.6	164.9	Up	05:02:10 - 05:32:10	-2640
Pasco	05:17:03	-47.8	Dark	Up	66.3	169.8	Up	05:02:03 - 05:32:03	-2667
Maupin	05:17:11	-47.2	Dark	Up	67.1	164.9	Up	05:02:11 - 05:32:11	-2680
PNWRO	05:17:02	-48.0	Dark	Up	66.6	170.3	Up	05:02:02 - 05:32:02	-2697
Sisters	05:17:15	-47.3	Dark	Up	67.8	163.2	Up	05:02:15 - 05:32:15	-2735
Redmond	05:17:14	-47.6	Dark	Up	67.9	164.1	Up	05:02:14 - 05:32:14	-2754
Bend	05:17:15	-47.6	Dark	Up	68.1	163.6	Up	05:02:15 - 05:32:15	-2767
Oregon Observatory	05:17:15	-47.6	Dark	Up	68.2	163.2	Up	05:02:15 - 05:32:15	-2776
La Pine/Gilchrist	05:17:16	-47.7	Dark	Up	68.4	162.9	Up	05:02:16 - 05:32:16	-2791
North Lake	05:17:15	-48.3	Dark	Up	69.0	164.1	Up	05:02:15 - 05:32:15	-2854
Klamath Falls	05:17:21	-48.2	Dark	Up	69.8	161.1	Up	05:02:21 - 05:32:21	-2906
Paisley	05:17:16	-48.8	Dark	Up	69.6	164.6	Up	05:02:16 - 05:32:16	-2918
Lakeview	05:17:16	-49.1	Dark	Up	70.1	164.7	Up	05:02:16 - 05:32:16	-2970
Fall River/Burney	05:17:22	-49.0	Dark	Up	71.0	161.0	Up	05:02:22 - 05:32:22	-3026
Cedarville	05:17:17	-49.5	Dark	Up	70.8	164.7	Up	05:02:17 - 05:32:17	-3036
Susanville	05:17:22	-49.7	Dark	Up	71.7	162.5	Up	05:02:22 - 05:32:22	-3114
Greenville	05:17:24	-49.7	Dark	Up	71.9	161.4	Up	05:02:24 - 05:32:24	-3126
Gimple	05:17:23	-49.7	Dark	Up	72.0	161.7	Up	05:02:23 - 05:32:23	-3130
Quincy	05:17:24	-49.7	Dark	Up	72.1	161.2	Up	05:02:24 - 05:32:24	-3144
Portola	05:17:23	-50.1	Dark	Up	72.4	162.5	Up	05:02:23 - 05:32:23	-3176
Reno	05:17:21	-50.7	Dark	Up	72.8	164.2	Up	05:02:21 - 05:32:21	-3229
Carson City	05:17:22	-50.9	Dark	Up	73.1	163.9	Up	05:02:22 - 05:32:22	-3262
Gardnerville	05:17:22	-51.0	Dark	Up	73.4	163.9	Up	05:02:22 - 05:32:22	-3286
Yerington	05:17:20	-51.4	Dark	Up	73.4	165.7	Up	05:02:20 - 05:32:20	-3308
Hawthorne	05:17:20	-52.0	Dark	Up	74.0	167.1	Up	05:02:20 - 05:32:20	-3373
Lee Vining	05:17:23	-51.9	Dark	Up	74.4	165.0	Up	05:02:23 - 05:32:23	-3403
Tonopah	05:17:17	-53.2	Dark	Up	74.6	171.5	Up	05:02:17 - 05:32:17	-3478
Bishop	05:17:22	-52.6	Dark	Up	75.1	166.9	Up	05:02:22 - 05:32:22	-3490
CPSLO	05:17:35	-51.8	Dark	Up	76.5	156.3	Up	05:02:35 - 05:32:35	-3576
Beatty	05:17:17	-54.0	Dark	Up	75.8	172.5	Up	05:02:17 - 05:32:17	-3606
Indian Springs	05:17:15	-54.9	Dark	Up	76.2	176.4	Up	05:02:15 - 05:32:15	-3684
Niwot	05:16:31	-59.4	Dark	Up	71.0	207.6	Up	05:01:31 - 05:31:31	-3764
Henderson	05:17:14	-55.7	Dark	Up	76.8	179.1	Up	05:02:14 - 05:32:14	-3765
SwRI	05:16:32	-59.5	Dark	Up	71.1	207.4	Up	05:01:32 - 05:31:32	-3771
Wildwood	05:17:31	-53.8	Dark	Up	78.3	162.6	Up	05:02:31 - 05:32:31	-3784
Searchlight/Boulder City	05:17:14	-56.0	Dark	Up	77.4	179.3	Up	05:02:14 - 05:32:14	-3822
Laughlin/Bullhead City	05:17:14	-56.3	Dark	Up	77.7	180.8	Up	05:02:14 - 05:32:14	-3865
Patrick	05:17:11	-56.7	Dark	Up	77.4	183.7	Up	05:02:11 - 05:32:11	-3873
Kingman/Dolan Springs	05:17:12	-56.7	Dark	Up	77.6	183.0	Up	05:02:12 - 05:32:12	-3886
Mohave Valley	05:17:15	-56.5	Dark	Up	77.9	180.9	Up	05:02:15 - 05:32:15	-3891
Idyllwild	05:17:25	-55.4	Dark	Up	79.0	170.8	Up	05:02:25 - 05:32:25	-3905
DCO	05:17:09	-57.4	Dark	Up	77.7	186.8	Up	05:02:09 - 05:32:09	-3933
Lake Havasu City	05:17:15	-56.8	Dark	Up	78.3	182.0	Up	05:02:15 - 05:32:15	-3940
Parker	05:17:16	-57.0	Dark	Up	78.7	182.2	Up	05:02:16 - 05:32:16	-3975
Blythe	05:17:18	-57.0	Dark	Up	79.2	180.9	Up	05:02:18 - 05:32:18	-4012
Calipatria	05:17:22	-56.5	Dark	Up	79.7	176.2	Up	05:02:22 - 05:32:22	-4017
Yuma	05:17:20	-57.3	Dark	Up	80.1	180.8	Up	05:02:20 - 05:32:20	-4099
George/Scottsdale	05:17:08	-59.0	Dark	Up	78.8	193.8	Up	05:02:08 - 05:32:08	-4123

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 91554, (2027/11/07 05:18UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 53.40  59
Algenib        00:13:14.2 +15:11:01  2.8 10.39  46
55 Psc         00:39:55.6 +21:26:17  6.4  1.57  55
PPM 090108     00:45:12.8 +23:35:27  7.2  0.91  57
PPM 090071     00:42:22.6 +22:49:56  9.1  0.14  56
91554          00:42:58.1 +22:50:22 13.9        56
Positions are for J2000

Event circumstances last updated at 2020/08/17 00:05:31 UT

RECON