RECON: TNO occultation with 590218

Event between (590218) 11UD63 and star GA1180:01661697 with event index number of 2685734

Geocentric closest approach at 2027/01/13 05:51:41 UTC

J2000 position of star is 05:39:31.1 +29:24:47
Equinox of date position of star is 05:40:55.4 +29:25:25
Stellar brightness G=14.0, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 93 degrees from the moon. Moon is 25% illuminated.
TNO apparent brightness V=20.4

[RECON map]
TNO is 14.1 AU from the Sun and 13.3 AU from the Earth.
The TNO is moving 19.3 km/sec on the sky relative to the star, or, 7.2 arcsec/hr.
The 1-sigma error in the time of the event is 177 seconds.
The 1-sigma cross-track error in the shadow position is 914 km.
The sky-plane scale is 9619.3 km/arcsec.

The TNO has an absolute magnitude Hv=8.8
Diameter=105.2 km assuming a 5% albedo -- 5.4 sec chord
Diameter=42.9 km assuming a 30% albedo -- 2.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 590218, (2027/01/13 05:52UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:28.5 +16:33:42  0.8 19.47  78
Alnath         05:28:00.2 +28:37:40  1.6  3.00  90
PPM 094619     05:41:01.5 +29:13:41  5.9  0.20  93
PPM 094672     05:43:05.0 +29:30:21  7.8  0.41  94
PPM 094619     05:41:01.5 +29:13:41  5.9  0.20  93
PPM 094620     05:41:05.1 +29:32:47 11.2  0.13  93
590218         05:41:14.5 +29:25:34 14.0        94
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 5.1 sigma about the mid-time.
The median site spacing is 29.3 km RECON observability=1.0 and success probability=18.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 05:51:39 -50.3 Dark Up 68.4 168.5 Up 05:36:39 - 06:06:39 3105
Sleaford 05:50:47 -55.6 Dark Down 66.3 200.7 Up 05:35:47 - 06:05:47 3096
Kelowna 05:51:37 -51.2 Dark Down 69.3 170.2 Up 05:36:37 - 06:06:37 3010
Peachland 05:51:39 -51.1 Dark Up 69.4 169.4 Up 05:36:39 - 06:06:39 3003
Summerland 05:51:39 -51.2 Dark Up 69.6 169.6 Up 05:36:39 - 06:06:39 2986
Penticton 05:51:38 -51.3 Dark Down 69.6 169.8 Up 05:36:38 - 06:06:38 2978
Oliver 05:51:39 -51.5 Dark Down 70.0 169.7 Up 05:36:39 - 06:06:39 2942
Victoria 05:51:54 -49.7 Dark Up 70.0 159.7 Up 05:36:54 - 06:06:54 2937
Anarchist Mountain Observatory 05:51:38 -51.7 Dark Down 70.2 170.1 Up 05:36:38 - 06:06:38 2922
Tonasket 05:51:39 -51.9 Dark Down 70.5 169.8 Up 05:36:39 - 06:06:39 2891
Okanogan 05:51:40 -52.0 Dark Up 70.8 169.2 Up 05:36:40 - 06:06:40 2859
Brewster 05:51:41 -52.0 Dark Up 71.0 168.5 Up 05:36:41 - 06:06:41 2834
Manson/Chelan 05:51:42 -51.9 Dark Up 71.2 167.4 Up 05:36:42 - 06:06:42 2818
Wenatchee 05:51:44 -52.1 Dark Up 71.6 166.7 Up 05:36:44 - 06:06:44 2772
Ellensburg 05:51:45 -52.1 Dark Up 72.0 165.8 Up 05:36:45 - 06:06:45 2733
Yakima 05:51:45 -52.3 Dark Up 72.4 165.4 Up 05:36:45 - 06:06:45 2692
Toppenish/White Swan 05:51:45 -52.6 Dark Up 72.6 165.7 Up 05:36:45 - 06:06:45 2666
Goldendale 05:51:48 -52.6 Dark Up 73.1 164.1 Up 05:36:48 - 06:06:48 2616
PNWRO 05:51:40 -53.6 Dark Down 73.2 169.8 Up 05:36:40 - 06:06:40 2604
The Dalles 05:51:49 -52.5 Dark Up 73.2 162.8 Up 05:36:49 - 06:06:49 2599
Maupin 05:51:49 -52.7 Dark Up 73.6 162.7 Up 05:36:49 - 06:06:49 2554
Sisters 05:51:53 -52.8 Dark Up 74.4 160.3 Up 05:36:53 - 06:06:53 2471
Bend 05:51:52 -53.1 Dark Up 74.7 160.8 Up 05:36:52 - 06:06:52 2442
Oregon Observatory 05:51:53 -53.1 Dark Up 74.8 160.2 Up 05:36:53 - 06:06:53 2426
North Lake 05:51:51 -53.7 Dark Up 75.5 161.1 Up 05:36:51 - 06:06:51 2349
Chiloquin 05:51:56 -53.4 Dark Up 75.9 157.0 Up 05:36:56 - 06:06:56 2295
Klamath Falls 05:51:56 -53.5 Dark Up 76.3 156.7 Up 05:36:56 - 06:06:56 2258
Lakeview 05:51:50 -54.5 Dark Up 76.7 161.7 Up 05:36:50 - 06:06:50 2228
Cedarville 05:51:50 -54.9 Dark Up 77.3 161.4 Up 05:36:50 - 06:06:50 2156
Fall River/Burney 05:51:56 -54.3 Dark Up 77.4 156.1 Up 05:36:56 - 06:06:56 2126
Susanville 05:51:54 -55.0 Dark Up 78.2 157.8 Up 05:36:54 - 06:06:54 2046
Greenville 05:51:56 -54.9 Dark Up 78.4 156.1 Up 05:36:56 - 06:06:56 2022
Gimple 05:51:55 -55.0 Dark Up 78.4 156.4 Up 05:36:55 - 06:06:55 2020
Quincy 05:51:56 -55.0 Dark Up 78.6 155.7 Up 05:36:56 - 06:06:56 2001
Portola 05:51:54 -55.4 Dark Up 78.9 157.4 Up 05:36:54 - 06:06:54 1979
Reno 05:51:52 -55.9 Dark Up 79.3 159.7 Up 05:36:52 - 06:06:52 1939
Carson City 05:51:52 -56.1 Dark Up 79.6 159.2 Up 05:36:52 - 06:06:52 1900
Gardnerville 05:51:52 -56.2 Dark Up 79.9 158.9 Up 05:36:52 - 06:06:52 1873
Yerington 05:51:49 -56.6 Dark Down 80.0 161.7 Up 05:36:49 - 06:06:49 1868
Dunrhomin 05:50:48 -64.9 Dark Down 76.4 220.6 Up 05:35:48 - 06:05:48 1832
Hawthorne 05:51:47 -57.2 Dark Down 80.5 163.5 Up 05:36:47 - 06:06:47 1809
Lee Vining 05:51:50 -57.0 Dark Down 81.0 159.9 Up 05:36:50 - 06:06:50 1757
Tonopah 05:51:42 -58.3 Dark Down 81.2 170.3 Up 05:36:42 - 06:06:42 1735
Bishop 05:51:48 -57.7 Dark Down 81.7 162.6 Up 05:36:48 - 06:06:48 1680
Beatty 05:51:41 -59.1 Dark Down 82.4 171.9 Up 05:36:41 - 06:06:41 1602
Indian Springs 05:51:36 -60.0 Dark Down 82.8 178.9 Up 05:36:36 - 06:06:36 1550
Henderson 05:51:34 -60.7 Dark Down 83.4 183.9 Up 05:36:34 - 06:06:34 1481
Patrick 05:51:29 -61.8 Dark Down 83.8 193.3 Up 05:36:29 - 06:06:29 1397
Laughlin/Bullhead City 05:51:33 -61.4 Dark Down 84.2 188.0 Up 05:36:33 - 06:06:33 1380
Kingman/Dolan Springs 05:51:30 -61.7 Dark Down 84.1 192.2 Up 05:36:30 - 06:06:30 1375
Mohave Valley 05:51:33 -61.5 Dark Down 84.5 188.4 Up 05:36:33 - 06:06:33 1351
Wildwood 05:51:52 -58.6 Dark Down 84.7 150.4 Up 05:36:52 - 06:06:52 1330
Lake Havasu City 05:51:32 -61.8 Dark Down 84.8 191.4 Up 05:36:32 - 06:06:32 1303
Parker 05:51:32 -61.9 Dark Down 85.2 192.6 Up 05:36:32 - 06:06:32 1264
Idyllwild 05:51:44 -60.2 Dark Down 85.6 166.7 Up 05:36:44 - 06:06:44 1258
George/Scottsdale 05:51:22 -63.9 Dark Down 84.7 216.5 Up 05:36:22 - 06:06:22 1184
Calipatria 05:51:39 -61.3 Dark Down 86.3 180.0 Up 05:36:39 - 06:06:39 1172
Yuma 05:51:35 -62.1 Dark Down 86.6 193.2 Up 05:36:35 - 06:06:35 1111

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 590218, (2027/01/13 05:52UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 19.47  78
Alnath         05:26:17.6 +28:36:23  1.6  3.00  90
PPM 094619     05:39:18.3 +29:12:54  5.9  0.20  93
PPM 094672     05:41:21.5 +29:29:39  7.8  0.41  94
PPM 094619     05:39:18.3 +29:12:54  5.9  0.20  93
PPM 094620     05:39:21.6 +29:32:00 11.2  0.13  93
590218         05:39:31.1 +29:24:47 14.0        93
Positions are for J2000

Event circumstances last updated at 2022/01/20 23:52:37 UT

Marc W. Buie, Southwest Research Institute

RECON