RECON: TNO occultation with 54598

Event between (54598) Bienor and star GA1320:02748955 with event index number of 1105046

Geocentric closest approach at 2022/02/06 08:51:40 UTC

J2000 position of star is 05:12:37.6 +43:50:00
Equinox of date position of star is 05:14:04.9 +43:51:21
Stellar brightness G=12.7, use SENSEUP=16
Star is 62 degrees from the moon. Moon is 29% illuminated.
TNO apparent brightness V=21.7

[RECON map]
TNO is 13.9 AU from the Sun and 13.4 AU from the Earth.
The TNO is moving 12.8 km/sec on the sky relative to the star, or, 4.7 arcsec/hr.
The 1-sigma error in the time of the event is 51 seconds.
The 1-sigma cross-track error in the shadow position is 775 km.
The sky-plane scale is 9712.4 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=190.6 km assuming a 5% albedo -- 4.7 sec chord
Diameter=77.8 km assuming a 30% albedo -- 1.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 54598, (2022/02/06 08:52UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:11.5 +16:33:07  0.8 28.41  47
34Bet Aur      06:01:09.0 +44:56:50  1.9  8.44  70
PPM 047726     05:08:24.5 +43:12:09  6.5  1.24  60
PPM 047849     05:14:41.2 +44:03:22  8.1  0.22  62
PPM 047836     05:14:04.6 +43:45:33  8.8  0.10  62
54598          05:14:13.3 +43:51:29 12.7        62
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 23.9 km RECON observability=1.0 and success probability=18.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 08:46:00 -54.6 Dark Down 43.3 290.8 Up 08:41:17 - 08:50:44 -968
Kelowna 08:46:01 -55.0 Dark Down 43.3 291.0 Up 08:41:17 - 08:50:44 -1011
Peachland 08:46:02 -55.2 Dark Down 43.4 291.0 Up 08:41:18 - 08:50:45 -1025
Summerland 08:46:02 -55.3 Dark Down 43.3 291.1 Up 08:41:18 - 08:50:45 -1040
Penticton 08:46:02 -55.4 Dark Down 43.2 291.3 Up 08:41:18 - 08:50:45 -1046
Oliver 08:46:02 -55.7 Dark Down 43.1 291.6 Up 08:41:18 - 08:50:45 -1084
Anarchist Mountain Observatory 08:46:01 -55.8 Dark Down 42.9 291.8 Up 08:41:18 - 08:50:45 -1101
Tonasket 08:46:02 -56.1 Dark Down 42.8 292.0 Up 08:41:19 - 08:50:46 -1134
Okanogan 08:46:02 -56.5 Dark Down 42.8 292.3 Up 08:41:19 - 08:50:46 -1171
Victoria 08:46:18 -56.8 Dark Down 45.2 290.2 Up 08:41:35 - 08:51:02 -1179
Brewster 08:46:03 -56.8 Dark Down 42.8 292.4 Up 08:41:20 - 08:50:47 -1202
Manson/Chelan 08:46:05 -57.0 Dark Down 43.0 292.4 Up 08:41:22 - 08:50:49 -1227
Entiat 08:46:06 -57.3 Dark Down 42.9 292.5 Up 08:41:22 - 08:50:49 -1251
Wenatchee 08:46:06 -57.5 Dark Down 42.9 292.7 Up 08:41:23 - 08:50:50 -1279
Ellensburg 08:46:08 -58.0 Dark Down 42.9 293.0 Up 08:41:25 - 08:50:52 -1324
Yakima 08:46:09 -58.4 Dark Down 42.7 293.3 Up 08:41:26 - 08:50:53 -1367
Toppenish/White Swan 08:46:08 -58.6 Dark Down 42.5 293.6 Up 08:41:25 - 08:50:52 -1389
Pasco 08:46:02 -58.4 Dark Down 41.7 294.3 Up 08:41:19 - 08:50:46 -1390
PNWRO 08:46:02 -58.6 Dark Down 41.4 294.6 Up 08:41:18 - 08:50:45 -1414
Goldendale 08:46:10 -59.2 Dark Down 42.6 293.8 Up 08:41:27 - 08:50:54 -1450
The Dalles 08:46:12 -59.4 Dark Down 42.7 293.9 Up 08:41:29 - 08:50:56 -1476
Maupin 08:46:13 -59.8 Dark Down 42.5 294.3 Up 08:41:29 - 08:50:56 -1519
Redmond 08:46:14 -60.7 Dark Down 42.2 295.0 Up 08:41:30 - 08:50:57 -1615
Sisters 08:46:16 -60.8 Dark Down 42.4 294.8 Up 08:41:33 - 08:51:00 -1615
Bend 08:46:15 -61.0 Dark Down 42.1 295.1 Up 08:41:31 - 08:50:58 -1638
Oregon Observatory 08:46:16 -61.1 Dark Down 42.2 295.2 Up 08:41:33 - 08:51:00 -1657
La Pine/Gilchrist 08:46:17 -61.3 Dark Down 42.1 295.3 Up 08:41:33 - 08:51:00 -1679
North Lake 08:46:14 -61.7 Dark Down 41.5 295.9 Up 08:41:31 - 08:50:58 -1719
Niwot 08:45:11 -58.5 Dark Down 30.0 304.0 Low 08:40:27 - 08:49:54 -1755
SwRI 08:45:11 -58.7 Dark Down 30.0 304.0 Low 08:40:27 - 08:49:54 -1767
Paisley 08:46:14 -62.1 Dark Down 41.1 296.5 Up 08:41:30 - 08:50:57 -1773
Lakeview 08:46:14 -62.6 Dark Down 40.7 297.0 Up 08:41:30 - 08:50:57 -1824
Klamath Falls 08:46:20 -62.8 Dark Down 41.6 296.4 Up 08:41:36 - 08:51:03 -1831
Cedarville 08:46:14 -63.2 Dark Down 40.3 297.5 Up 08:41:30 - 08:50:57 -1889
Fall River/Burney 08:46:21 -63.9 Dark Down 40.9 297.5 Up 08:41:37 - 08:51:04 -1949
Susanville 08:46:17 -64.3 Dark Down 40.1 298.2 Up 08:41:34 - 08:51:01 -2007
Gimple 08:46:19 -64.7 Dark Down 40.1 298.3 Up 08:41:36 - 08:51:03 -2036
Greenville 08:46:19 -64.7 Dark Down 40.1 298.3 Up 08:41:36 - 08:51:03 -2037
Quincy 08:46:20 -64.9 Dark Down 40.0 298.4 Up 08:41:37 - 08:51:04 -2057
Portola 08:46:18 -64.9 Dark Down 39.7 298.7 Up 08:41:35 - 08:51:02 -2066
Reno 08:46:15 -65.0 Dark Down 39.1 299.1 Up 08:41:32 - 08:50:59 -2087
Carson City 08:46:16 -65.3 Dark Down 38.9 299.4 Up 08:41:33 - 08:51:00 -2123
Yerington 08:46:14 -65.3 Dark Down 38.4 299.7 Up 08:41:30 - 08:50:57 -2135
Gardnerville 08:46:16 -65.5 Dark Down 38.8 299.5 Up 08:41:33 - 08:51:00 -2147
Hawthorne 08:46:12 -65.6 Dark Down 37.8 300.2 Up 08:41:28 - 08:50:55 -2176
Tonopah 08:46:05 -65.6 Dark Down 36.6 300.9 Up 08:41:22 - 08:50:49 -2205
Lee Vining 08:46:16 -66.3 Dark Down 37.8 300.4 Up 08:41:32 - 08:50:59 -2238
Bishop 08:46:12 -66.6 Dark Down 37.0 301.0 Up 08:41:29 - 08:50:56 -2288
Beatty 08:46:05 -66.5 Dark Down 35.7 301.8 Up 08:41:22 - 08:50:49 -2312
Indian Springs 08:46:01 -66.3 Dark Down 34.8 302.3 Up 08:41:17 - 08:50:44 -2328
Henderson 08:45:59 -66.5 Dark Down 34.1 302.8 Up 08:41:15 - 08:50:42 -2368
Patrick 08:45:54 -66.5 Dark Down 33.0 303.5 Up 08:41:11 - 08:50:38 -2409
Searchlight/Boulder City 08:45:59 -66.9 Dark Down 33.7 303.2 Up 08:41:16 - 08:50:43 -2422
DCO 08:45:52 -66.4 Dark Down 32.3 303.8 Up 08:41:08 - 08:50:35 -2425
Kingman/Dolan Springs 08:45:56 -66.8 Dark Down 33.0 303.6 Up 08:41:13 - 08:50:40 -2434
Laughlin/Bullhead City 08:45:58 -67.0 Dark Down 33.3 303.4 Up 08:41:15 - 08:50:42 -2444
Mohave Valley 08:45:59 -67.2 Dark Down 33.2 303.6 Up 08:41:15 - 08:50:42 -2470
Lake Havasu City 08:45:58 -67.4 Dark Down 32.8 303.9 Up 08:41:15 - 08:50:42 -2504
CPSLO 08:46:28 -69.2 Dark Down 37.5 301.8 Up 08:41:45 - 08:51:12 -2512
George/Scottsdale 08:45:49 -66.8 Dark Down 30.7 304.9 Up 08:41:05 - 08:50:32 -2529
Parker 08:45:59 -67.7 Dark Down 32.5 304.0 Up 08:41:16 - 08:50:43 -2537
Blythe 08:46:02 -68.3 Dark Down 32.4 304.3 Up 08:41:18 - 08:50:45 -2592
Wildwood 08:46:20 -69.6 Dark Down 35.4 303.0 Up 08:41:37 - 08:51:04 -2607
Idyllwild 08:46:12 -69.2 Dark Down 33.9 303.7 Up 08:41:28 - 08:50:55 -2616
Calipatria 08:46:08 -69.1 Dark Down 32.8 304.3 Up 08:41:24 - 08:50:51 -2654
Yuma 08:46:05 -69.0 Dark Down 31.9 304.7 Up 08:41:21 - 08:50:48 -2679

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, (2022/02/06 08:52UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 28.41  47
34Bet Aur      05:59:31.6 +44:56:51  1.9  8.44  70
PPM 047726     05:06:49.5 +43:10:29  6.5  1.24  60
PPM 047849     05:13:05.2 +44:01:54  8.1  0.22  62
PPM 047836     05:12:28.9 +43:44:04  8.8  0.10  62
54598          05:12:37.6 +43:50:00 12.7        62
Positions are for J2000

Event circumstances last updated at 2020/02/24 22:32:10 UT

Marc W. Buie, Southwest Research Institute

RECON