RECON: TNO occultation with 54598

Event between (54598) Bienor and star GA1320:01656196 with event index number of 310854

Geocentric closest approach at 2019/11/17 08:28:05 UTC

J2000 position of star is 04:09:20.5 +43:35:33
Equinox of date position of star is 04:10:41.2 +43:38:30
Stellar brightness G=15.9, use SENSEUP=128
Star is 47 degrees from the moon. Moon is 77% illuminated.
TNO apparent brightness V=19.2

[RECON map]
TNO is 14.5 AU from the Sun and 13.6 AU from the Earth.
The TNO is moving 21.3 km/sec on the sky relative to the star, or, 7.8 arcsec/hr.
The 1-sigma error in the time of the event is 33 seconds.
The 1-sigma cross-track error in the shadow position is 508 km.
The sky-plane scale is 9869.7 km/arcsec.

The TNO has an absolute magnitude Hv=7.5
Diameter=190.6 km assuming a 5% albedo -- 9.0 sec chord
Diameter=77.8 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 54598, (2019/11/17 08:28UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:03.8 +16:32:52  0.8 27.67  43
Mirphak        03:25:45.1 +49:55:49  1.8  9.92  56
PPM 046963     04:19:31.0 +42:11:18  6.1  2.17  46
PPM 046827     04:10:04.9 +43:44:09  8.2  0.15  47
54598          04:10:44.1 +43:38:37 15.9        47
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 24.5 km RECON observability=1.0 and success probability=17.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 08:28:00 -57.7 Dark Up 83.6 189.1 Up 08:24:46 - 08:31:14 2574
Summerland 08:28:01 -58.1 Dark Up 83.9 187.7 Up 08:24:47 - 08:31:15 2542
Penticton 08:28:00 -58.1 Dark Up 84.0 188.5 Up 08:24:46 - 08:31:14 2534
Okanagan Falls 08:28:00 -58.3 Dark Up 84.2 188.6 Up 08:24:46 - 08:31:14 2514
Oliver 08:28:00 -58.4 Dark Up 84.3 189.0 Up 08:24:46 - 08:31:14 2496
Anarchist Mountain Observatory 08:28:00 -58.5 Dark Up 84.5 190.8 Up 08:24:46 - 08:31:14 2476
Oroville 08:28:00 -58.6 Dark Up 84.6 190.3 Up 08:24:46 - 08:31:14 2468
Tonasket 08:28:00 -58.9 Dark Up 84.8 190.8 Up 08:24:46 - 08:31:14 2442
Okanogan 08:28:01 -59.2 Dark Up 85.2 190.3 Up 08:24:47 - 08:31:15 2405
Brewster 08:28:01 -59.5 Dark Up 85.4 189.1 Up 08:24:47 - 08:31:15 2376
Manson/Chelan 08:28:03 -59.8 Dark Up 85.7 186.1 Up 08:24:49 - 08:31:17 2355
Entiat 08:28:03 -60.0 Dark Up 85.9 185.8 Up 08:24:49 - 08:31:17 2331
Wenatchee 08:28:04 -60.3 Dark Up 86.2 185.1 Up 08:24:50 - 08:31:18 2303
Ellensburg 08:28:05 -60.7 Dark Up 86.6 183.1 Up 08:24:51 - 08:31:19 2259
Yakima 08:28:05 -61.1 Dark Up 87.0 183.2 Up 08:24:51 - 08:31:19 2214
Toppenish/White Swan 08:28:04 -61.3 Dark Up 87.2 186.0 Up 08:24:50 - 08:31:18 2189
Pasco 08:28:00 -61.0 Dark Up 87.1 204.4 Up 08:24:46 - 08:31:14 2169
PNWRO 08:27:59 -61.2 Dark Up 87.2 209.6 Up 08:24:45 - 08:31:13 2141
George/Umatilla 08:28:01 -61.4 Dark Up 87.5 204.3 Up 08:24:47 - 08:31:15 2133
Goldendale 08:28:06 -61.9 Dark Up 87.8 179.7 Up 08:24:52 - 08:31:20 2130
The Dalles 08:28:07 -62.2 Dark Up 88.0 172.2 Up 08:24:53 - 08:31:21 2108
Maupin 08:28:07 -62.5 Dark Up 88.4 172.9 Up 08:24:53 - 08:31:21 2061
Madras/Culver 08:28:08 -63.1 Dark Up 88.9 167.7 Up 08:24:54 - 08:31:22 2000
Sisters 08:28:09 -63.5 Dark Up 89.1 142.0 Up 08:24:55 - 08:31:23 1966
Redmond 08:28:08 -63.4 Dark Up 89.3 159.0 Up 08:24:54 - 08:31:22 1961
Bend 08:28:08 -63.6 Dark Up 89.4 142.1 Up 08:24:54 - 08:31:22 1938
Oregon Observatory 08:28:09 -63.8 Dark Up 89.5 122.5 Up 08:24:55 - 08:31:23 1920
La Pine/Gilchrist 08:28:09 -64.0 Dark Up 89.5 99.7 Up 08:24:55 - 08:31:23 1898
North Lake 08:28:07 -64.3 Dark Up 89.6 10.9 Up 08:24:53 - 08:31:21 1845
Paisley 08:28:06 -64.7 Dark Up 89.1 348.0 Up 08:24:52 - 08:31:20 1782
Chiloquin 08:28:11 -65.2 Dark Up 88.7 36.1 Up 08:24:57 - 08:31:25 1777
Klamath Falls 08:28:11 -65.5 Dark Up 88.5 26.8 Up 08:24:57 - 08:31:25 1738
Lakeview 08:28:06 -65.1 Dark Up 88.6 346.9 Up 08:24:52 - 08:31:20 1725
Tulelake 08:28:10 -65.6 Dark Up 88.3 16.2 Up 08:24:56 - 08:31:24 1706
Cedarville 08:28:05 -65.7 Dark Up 87.9 347.6 Up 08:24:51 - 08:31:19 1651
Fall River/Burney 08:28:10 -66.5 Dark Up 87.4 9.3 Up 08:24:56 - 08:31:24 1605
Susanville 08:28:08 -66.8 Dark Up 86.8 358.0 Up 08:24:54 - 08:31:22 1531
Niwot 08:27:07 -59.6 Dark Up 78.0 292.0 Up 08:23:53 - 08:30:21 1518
SwRI 08:27:07 -59.7 Dark Up 78.1 292.5 Up 08:23:53 - 08:30:21 1506
Greenville 08:28:09 -67.2 Dark Up 86.5 1.6 Up 08:24:55 - 08:31:23 1502
Gimple 08:28:08 -67.1 Dark Up 86.5 0.6 Up 08:24:54 - 08:31:22 1501
Quincy 08:28:09 -67.3 Dark Up 86.3 1.5 Up 08:24:55 - 08:31:23 1480
Portola 08:28:07 -67.3 Dark Up 86.2 356.3 Up 08:24:53 - 08:31:21 1463
Reno 08:28:04 -67.3 Dark Up 85.9 350.1 Up 08:24:50 - 08:31:18 1430
Carson City 08:28:04 -67.6 Dark Up 85.5 350.6 Up 08:24:50 - 08:31:18 1390
Yerington 08:28:02 -67.6 Dark Up 85.2 345.7 Up 08:24:48 - 08:31:16 1365
Gardnerville 08:28:04 -67.8 Dark Up 85.3 350.7 Up 08:24:50 - 08:31:18 1362
Hawthorne 08:28:00 -67.7 Dark Up 84.7 343.0 Up 08:24:46 - 08:31:14 1311
Tonopah 08:27:54 -67.5 Dark Up 83.9 335.3 Up 08:24:40 - 08:31:08 1254
Lee Vining 08:28:02 -68.4 Dark Up 84.2 347.9 Up 08:24:48 - 08:31:16 1251
Bishop 08:27:59 -68.6 Dark Up 83.5 344.5 Up 08:24:45 - 08:31:13 1182
Beatty 08:27:53 -68.2 Dark Up 82.7 336.8 Up 08:24:39 - 08:31:07 1125
Lone Pine 08:27:58 -69.1 Dark Up 82.7 344.3 Up 08:24:44 - 08:31:12 1097
Indian Springs 08:27:48 -68.0 Dark Up 82.0 332.7 Up 08:24:34 - 08:31:02 1087
Henderson 08:27:45 -68.0 Dark Up 81.3 331.5 Up 08:24:31 - 08:30:59 1028
CPSLO 08:28:09 -71.3 Dark Up 81.7 359.2 Up 08:24:55 - 08:31:23 968
Searchlight/Boulder City 08:27:45 -68.4 Dark Up 80.7 333.0 Up 08:24:31 - 08:30:59 964
Patrick 08:27:41 -67.8 Dark Up 80.3 329.3 Up 08:24:27 - 08:30:55 959
Kingman/Dolan Springs 08:27:42 -68.1 Dark Up 80.2 330.6 Up 08:24:28 - 08:30:56 934
Laughlin/Bullhead City 08:27:44 -68.4 Dark Up 80.3 332.5 Up 08:24:30 - 08:30:58 932
DCO 08:27:38 -67.6 Dark Up 79.7 327.9 Up 08:24:24 - 08:30:52 926
Mohave Valley 08:27:44 -68.6 Dark Up 80.1 333.2 Up 08:24:30 - 08:30:58 902
Lake Havasu City 08:27:43 -68.7 Dark Up 79.6 333.4 Up 08:24:29 - 08:30:57 858
Wildwood 08:28:01 -71.4 Dark Up 80.4 350.5 Up 08:24:47 - 08:31:15 824
Parker 08:27:43 -68.9 Dark Up 79.3 334.1 Up 08:24:29 - 08:30:57 819
Idyllwild 08:27:53 -70.6 Dark Up 79.7 343.5 Up 08:24:39 - 08:31:07 778
Blythe 08:27:44 -69.4 Dark Up 78.9 336.2 Up 08:24:30 - 08:30:58 762
Calipatria 08:27:48 -70.3 Dark Up 78.8 340.3 Up 08:24:34 - 08:31:02 709
Yuma 08:27:44 -70.1 Dark Up 78.1 338.1 Up 08:24:30 - 08:30:58 661

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, (2019/11/17 08:28UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 27.67  43
Mirphak        03:24:19.4 +49:51:40  1.8  9.92  56
PPM 046963     04:18:08.2 +42:08:27  6.1  2.17  46
PPM 046827     04:08:41.2 +43:41:04  8.2  0.15  47
54598          04:09:20.5 +43:35:33 15.9        47
Positions are for J2000

Event circumstances last updated at 2019/03/13 21:53:59 UT

Marc W. Buie, Southwest Research Institute

RECON