RECON: TNO occultation with 54598

Event between (54598) Bienor and star GA1300:01103922 with event index number of 166686

Geocentric closest approach at 2018/11/26 05:36:31 UTC

J2000 position of star is 03:29:16.7 +41:41:30
Equinox of date position of star is 03:30:32.1 +41:45:19
Stellar brightness G=15.9, use SENSEUP=128
Star is 48 degrees from the moon. Moon is 88% illuminated.
TNO apparent brightness V=19.2

[RECON map]
TNO is 14.8 AU from the Sun and 13.9 AU from the Earth.
The TNO is moving 22.1 km/sec on the sky relative to the star, or, 7.9 arcsec/hr.
The 1-sigma error in the time of the event is 45 seconds.
The 1-sigma cross-track error in the shadow position is 662 km.
The sky-plane scale is 10057.0 km/arcsec.

The TNO has an absolute magnitude Hv=7.5
Diameter=190.6 km assuming a 5% albedo -- 8.6 sec chord
Diameter=77.8 km assuming a 30% albedo -- 3.5 sec chord
Dynamical classification is CENTAURR

Star training set for 54598, (2018/11/26 05:37UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.4 +16:32:45  0.8 28.97  34
Algol          03:09:24.4 +41:01:38  2.1  4.03  52
PPM 046142     03:26:24.8 +41:19:23  6.4  0.89  49
PPM 046174     03:27:46.3 +42:20:28  8.1  0.78  49
PPM 046204     03:29:18.2 +41:44:17  9.0  0.23  48
54598          03:30:32.6 +41:45:21 15.9        48
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 23.3 km RECON observability=1.0 and success probability=0.4%

Site Site mid-time
(UT) Sun alt
(deg) Sky Moon Star alt
(deg) Star az
(deg) Target Observing Time
(UT) X-track
(km)

Rutland 05:37:27 -51.7 Dark Up 72.6 109.5 Up 05:33:10 - 05:41:44 4376

Penticton 05:37:29 -51.8 Dark Up 72.6 108.2 Up 05:33:12 - 05:41:46 4348

Okanagan Falls 05:37:30 -51.9 Dark Up 72.6 107.6 Up 05:33:13 - 05:41:47 4331

Southern Okanagan 05:37:30 -52.0 Dark Up 72.7 107.1 Up 05:33:13 - 05:41:47 4315

Oroville 05:37:30 -52.2 Dark Up 72.8 106.5 Up 05:33:13 - 05:41:47 4288

Tonasket 05:37:30 -52.4 Dark Up 72.9 105.8 Up 05:33:13 - 05:41:47 4266

Okanogan 05:37:32 -52.5 Dark Up 72.9 104.6 Up 05:33:15 - 05:41:49 4240

Brewster 05:37:34 -52.5 Dark Up 72.8 103.5 Up 05:33:17 - 05:41:51 4222

Manson/Chelan 05:37:35 -52.5 Dark Up 72.6 102.4 Up 05:33:18 - 05:41:52 4216

Entiat 05:37:36 -52.5 Dark Up 72.6 101.6 Up 05:33:19 - 05:41:53 4198

Wenatchee 05:37:37 -52.6 Dark Up 72.6 100.7 Up 05:33:20 - 05:41:54 4178

Ellensburg 05:37:38 -52.7 Dark Up 72.6 99.2 Up 05:33:21 - 05:41:55 4148

Yakima 05:37:40 -53.0 Dark Up 72.6 97.9 Up 05:33:23 - 05:41:57 4111

Toppenish/White Swan 05:37:40 -53.2 Dark Up 72.8 97.4 Up 05:33:23 - 05:41:57 4084

Goldendale 05:37:42 -53.2 Dark Up 72.5 95.2 Up 05:33:25 - 05:41:59 4049

The Dalles 05:37:44 -53.1 Dark Up 72.3 94.2 Up 05:33:27 - 05:42:01 4042

Pasco 05:37:36 -54.0 Dark Up 73.6 98.3 Up 05:33:19 - 05:41:53 4024

George/Umatilla 05:37:38 -54.0 Dark Up 73.5 96.9 Up 05:33:21 - 05:41:55 4000

Maupin 05:37:45 -53.4 Dark Up 72.4 92.9 Up 05:33:28 - 05:42:02 3999

PNWRO 05:37:36 -54.2 Dark Up 73.8 97.7 Up 05:33:19 - 05:41:53 3992

Madras/Culver 05:37:46 -53.6 Dark Up 72.4 91.2 Up 05:33:29 - 05:42:03 3949

Sisters 05:37:48 -53.5 Dark Up 72.1 89.8 Up 05:33:31 - 05:42:05 3936

Redmond 05:37:48 -53.8 Dark Up 72.4 90.0 Up 05:33:31 - 05:42:05 3917

Bend 05:37:48 -53.8 Dark Up 72.3 89.3 Up 05:33:31 - 05:42:05 3903

Oregon Observatory 05:37:49 -53.8 Dark Up 72.2 88.6 Up 05:33:32 - 05:42:06 3892

La Pine/Gilchrist 05:37:50 -53.9 Dark Up 72.1 88.0 Up 05:33:33 - 05:42:07 3875

North Lake 05:37:49 -54.5 Dark Up 72.5 87.0 Up 05:33:32 - 05:42:06 3809

Chiloquin 05:37:54 -54.2 Dark Up 71.8 84.4 Up 05:33:37 - 05:42:11 3785

Klamath Falls 05:37:55 -54.4 Dark Up 71.8 83.4 Up 05:33:38 - 05:42:12 3750

Paisley 05:37:50 -55.0 Dark Up 72.8 85.4 Up 05:33:33 - 05:42:07 3742

Tulelake 05:37:55 -54.7 Dark Up 72.0 82.7 Up 05:33:38 - 05:42:12 3712

Lakeview 05:37:51 -55.3 Dark Up 72.9 83.8 Up 05:33:34 - 05:42:08 3686

Fall River/Burney 05:37:57 -55.1 Dark Up 71.9 79.9 Up 05:33:40 - 05:42:14 3622

Cedarville 05:37:52 -55.7 Dark Up 72.9 81.8 Up 05:33:35 - 05:42:09 3616

Susanville 05:37:56 -55.9 Dark Up 72.4 78.2 Up 05:33:39 - 05:42:13 3530

Greenville 05:37:58 -55.8 Dark Up 72.1 77.3 Up 05:33:41 - 05:42:15 3517

Gimple 05:37:57 -55.9 Dark Up 72.2 77.3 Up 05:33:40 - 05:42:14 3513

Quincy 05:37:58 -55.9 Dark Up 72.1 76.7 Up 05:33:41 - 05:42:15 3497

Portola 05:37:57 -56.3 Dark Up 72.4 76.3 Up 05:33:40 - 05:42:14 3465

Reno 05:37:55 -56.9 Dark Up 72.8 75.5 Up 05:33:38 - 05:42:12 3411

Carson City 05:37:56 -57.0 Dark Up 72.7 74.4 Up 05:33:39 - 05:42:13 3376

Gardnerville 05:37:57 -57.2 Dark Up 72.7 73.7 Up 05:33:40 - 05:42:14 3350

Yerington 05:37:55 -57.6 Dark Up 73.1 73.8 Up 05:33:38 - 05:42:12 3330

Hawthorne 05:37:54 -58.1 Dark Up 73.4 72.2 Up 05:33:37 - 05:42:11 3263

Lee Vining 05:37:57 -58.0 Dark Up 72.9 70.6 Up 05:33:40 - 05:42:14 3229

Tonopah 05:37:51 -59.3 Dark Up 74.3 70.4 Up 05:33:34 - 05:42:08 3158

Bishop 05:37:56 -58.8 Dark Up 73.2 68.5 Up 05:33:39 - 05:42:13 3140

Lone Pine 05:37:57 -59.3 Dark Up 73.1 66.1 Up 05:33:40 - 05:42:14 3052

CPSLO 05:38:09 -57.8 Dark Up 70.7 63.6 Up 05:33:52 - 05:42:26 3042

Beatty 05:37:52 -60.1 Dark Up 74.2 66.3 Up 05:33:35 - 05:42:09 3026

Indian Springs 05:37:49 -61.0 Dark Up 74.8 64.6 Up 05:33:32 - 05:42:06 2949

Niwot 05:37:05 -65.6 Dark Up 83.7 72.9 Up 05:32:48 - 05:41:22 2928

Henderson 05:37:48 -61.8 Dark Up 75.1 62.3 Up 05:33:31 - 05:42:05 2867

Wildwood 05:38:04 -59.8 Dark Up 71.6 59.3 Up 05:33:47 - 05:42:21 2832

Searchlight/Boulder City 05:37:48 -62.1 Dark Up 74.9 60.4 Up 05:33:31 - 05:42:05 2808

Laughlin/Bullhead City 05:37:48 -62.4 Dark Up 75.0 59.1 Up 05:33:31 - 05:42:05 2764

Patrick 05:37:45 -62.9 Dark Up 75.6 59.2 Up 05:33:28 - 05:42:02 2760

Kingman/Dolan Springs 05:37:46 -62.8 Dark Up 75.3 58.6 Up 05:33:29 - 05:42:03 2745

Mohave Valley 05:37:48 -62.6 Dark Up 74.8 58.2 Up 05:33:31 - 05:42:05 2737

Idyllwild 05:37:59 -61.4 Dark Up 72.7 56.9 Up 05:33:42 - 05:42:16 2713

DCO 05:37:43 -63.5 Dark Up 75.9 57.4 Up 05:33:26 - 05:42:00 2701

Lake Havasu City 05:37:48 -62.9 Dark Up 74.8 56.7 Up 05:33:31 - 05:42:05 2687

Parker 05:37:49 -63.1 Dark Up 74.6 55.6 Up 05:33:32 - 05:42:06 2651

Blythe 05:37:52 -63.0 Dark Up 74.1 54.4 Up 05:33:35 - 05:42:09 2611

Calipatria 05:37:56 -62.5 Dark Up 73.2 54.1 Up 05:33:39 - 05:42:13 2602

Yuma 05:37:53 -63.3 Dark Up 73.5 51.9 Up 05:33:36 - 05:42:10 2522

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 54598, (2018/11/26 05:37UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 28.97  34
Algol          03:08:10.1 +40:57:20  2.1  4.03  52
PPM 046142     03:25:09.4 +41:15:27  6.4  0.89  49
PPM 046174     03:26:30.1 +42:16:33  8.1  0.78  49
PPM 046204     03:28:02.3 +41:40:25  9.0  0.23  48
54598          03:29:16.7 +41:41:30 15.9        48
Positions are for J2000

Event circumstances last updated at 2018/10/04 18:57:53 UT

Marc W. Buie, Southwest Research Institute

RECON

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Rutland	05:37:27	-51.7	Dark	Up	72.6	109.5	Up	05:33:10 - 05:41:44	4376
Penticton	05:37:29	-51.8	Dark	Up	72.6	108.2	Up	05:33:12 - 05:41:46	4348
Okanagan Falls	05:37:30	-51.9	Dark	Up	72.6	107.6	Up	05:33:13 - 05:41:47	4331
Southern Okanagan	05:37:30	-52.0	Dark	Up	72.7	107.1	Up	05:33:13 - 05:41:47	4315
Oroville	05:37:30	-52.2	Dark	Up	72.8	106.5	Up	05:33:13 - 05:41:47	4288
Tonasket	05:37:30	-52.4	Dark	Up	72.9	105.8	Up	05:33:13 - 05:41:47	4266
Okanogan	05:37:32	-52.5	Dark	Up	72.9	104.6	Up	05:33:15 - 05:41:49	4240
Brewster	05:37:34	-52.5	Dark	Up	72.8	103.5	Up	05:33:17 - 05:41:51	4222
Manson/Chelan	05:37:35	-52.5	Dark	Up	72.6	102.4	Up	05:33:18 - 05:41:52	4216
Entiat	05:37:36	-52.5	Dark	Up	72.6	101.6	Up	05:33:19 - 05:41:53	4198
Wenatchee	05:37:37	-52.6	Dark	Up	72.6	100.7	Up	05:33:20 - 05:41:54	4178
Ellensburg	05:37:38	-52.7	Dark	Up	72.6	99.2	Up	05:33:21 - 05:41:55	4148
Yakima	05:37:40	-53.0	Dark	Up	72.6	97.9	Up	05:33:23 - 05:41:57	4111
Toppenish/White Swan	05:37:40	-53.2	Dark	Up	72.8	97.4	Up	05:33:23 - 05:41:57	4084
Goldendale	05:37:42	-53.2	Dark	Up	72.5	95.2	Up	05:33:25 - 05:41:59	4049
The Dalles	05:37:44	-53.1	Dark	Up	72.3	94.2	Up	05:33:27 - 05:42:01	4042
Pasco	05:37:36	-54.0	Dark	Up	73.6	98.3	Up	05:33:19 - 05:41:53	4024
George/Umatilla	05:37:38	-54.0	Dark	Up	73.5	96.9	Up	05:33:21 - 05:41:55	4000
Maupin	05:37:45	-53.4	Dark	Up	72.4	92.9	Up	05:33:28 - 05:42:02	3999
PNWRO	05:37:36	-54.2	Dark	Up	73.8	97.7	Up	05:33:19 - 05:41:53	3992
Madras/Culver	05:37:46	-53.6	Dark	Up	72.4	91.2	Up	05:33:29 - 05:42:03	3949
Sisters	05:37:48	-53.5	Dark	Up	72.1	89.8	Up	05:33:31 - 05:42:05	3936
Redmond	05:37:48	-53.8	Dark	Up	72.4	90.0	Up	05:33:31 - 05:42:05	3917
Bend	05:37:48	-53.8	Dark	Up	72.3	89.3	Up	05:33:31 - 05:42:05	3903
Oregon Observatory	05:37:49	-53.8	Dark	Up	72.2	88.6	Up	05:33:32 - 05:42:06	3892
La Pine/Gilchrist	05:37:50	-53.9	Dark	Up	72.1	88.0	Up	05:33:33 - 05:42:07	3875
North Lake	05:37:49	-54.5	Dark	Up	72.5	87.0	Up	05:33:32 - 05:42:06	3809
Chiloquin	05:37:54	-54.2	Dark	Up	71.8	84.4	Up	05:33:37 - 05:42:11	3785
Klamath Falls	05:37:55	-54.4	Dark	Up	71.8	83.4	Up	05:33:38 - 05:42:12	3750
Paisley	05:37:50	-55.0	Dark	Up	72.8	85.4	Up	05:33:33 - 05:42:07	3742
Tulelake	05:37:55	-54.7	Dark	Up	72.0	82.7	Up	05:33:38 - 05:42:12	3712
Lakeview	05:37:51	-55.3	Dark	Up	72.9	83.8	Up	05:33:34 - 05:42:08	3686
Fall River/Burney	05:37:57	-55.1	Dark	Up	71.9	79.9	Up	05:33:40 - 05:42:14	3622
Cedarville	05:37:52	-55.7	Dark	Up	72.9	81.8	Up	05:33:35 - 05:42:09	3616
Susanville	05:37:56	-55.9	Dark	Up	72.4	78.2	Up	05:33:39 - 05:42:13	3530
Greenville	05:37:58	-55.8	Dark	Up	72.1	77.3	Up	05:33:41 - 05:42:15	3517
Gimple	05:37:57	-55.9	Dark	Up	72.2	77.3	Up	05:33:40 - 05:42:14	3513
Quincy	05:37:58	-55.9	Dark	Up	72.1	76.7	Up	05:33:41 - 05:42:15	3497
Portola	05:37:57	-56.3	Dark	Up	72.4	76.3	Up	05:33:40 - 05:42:14	3465
Reno	05:37:55	-56.9	Dark	Up	72.8	75.5	Up	05:33:38 - 05:42:12	3411
Carson City	05:37:56	-57.0	Dark	Up	72.7	74.4	Up	05:33:39 - 05:42:13	3376
Gardnerville	05:37:57	-57.2	Dark	Up	72.7	73.7	Up	05:33:40 - 05:42:14	3350
Yerington	05:37:55	-57.6	Dark	Up	73.1	73.8	Up	05:33:38 - 05:42:12	3330
Hawthorne	05:37:54	-58.1	Dark	Up	73.4	72.2	Up	05:33:37 - 05:42:11	3263
Lee Vining	05:37:57	-58.0	Dark	Up	72.9	70.6	Up	05:33:40 - 05:42:14	3229
Tonopah	05:37:51	-59.3	Dark	Up	74.3	70.4	Up	05:33:34 - 05:42:08	3158
Bishop	05:37:56	-58.8	Dark	Up	73.2	68.5	Up	05:33:39 - 05:42:13	3140
Lone Pine	05:37:57	-59.3	Dark	Up	73.1	66.1	Up	05:33:40 - 05:42:14	3052
CPSLO	05:38:09	-57.8	Dark	Up	70.7	63.6	Up	05:33:52 - 05:42:26	3042
Beatty	05:37:52	-60.1	Dark	Up	74.2	66.3	Up	05:33:35 - 05:42:09	3026
Indian Springs	05:37:49	-61.0	Dark	Up	74.8	64.6	Up	05:33:32 - 05:42:06	2949
Niwot	05:37:05	-65.6	Dark	Up	83.7	72.9	Up	05:32:48 - 05:41:22	2928
Henderson	05:37:48	-61.8	Dark	Up	75.1	62.3	Up	05:33:31 - 05:42:05	2867
Wildwood	05:38:04	-59.8	Dark	Up	71.6	59.3	Up	05:33:47 - 05:42:21	2832
Searchlight/Boulder City	05:37:48	-62.1	Dark	Up	74.9	60.4	Up	05:33:31 - 05:42:05	2808
Laughlin/Bullhead City	05:37:48	-62.4	Dark	Up	75.0	59.1	Up	05:33:31 - 05:42:05	2764
Patrick	05:37:45	-62.9	Dark	Up	75.6	59.2	Up	05:33:28 - 05:42:02	2760
Kingman/Dolan Springs	05:37:46	-62.8	Dark	Up	75.3	58.6	Up	05:33:29 - 05:42:03	2745
Mohave Valley	05:37:48	-62.6	Dark	Up	74.8	58.2	Up	05:33:31 - 05:42:05	2737
Idyllwild	05:37:59	-61.4	Dark	Up	72.7	56.9	Up	05:33:42 - 05:42:16	2713
DCO	05:37:43	-63.5	Dark	Up	75.9	57.4	Up	05:33:26 - 05:42:00	2701
Lake Havasu City	05:37:48	-62.9	Dark	Up	74.8	56.7	Up	05:33:31 - 05:42:05	2687
Parker	05:37:49	-63.1	Dark	Up	74.6	55.6	Up	05:33:32 - 05:42:06	2651
Blythe	05:37:52	-63.0	Dark	Up	74.1	54.4	Up	05:33:35 - 05:42:09	2611
Calipatria	05:37:56	-62.5	Dark	Up	73.2	54.1	Up	05:33:39 - 05:42:13	2602
Yuma	05:37:53	-63.3	Dark	Up	73.5	51.9	Up	05:33:36 - 05:42:10	2522