RECON: TNO occultation with 590218

Event between (590218) 11UD63 and star GA1180:01604942 with event index number of 2685745

Geocentric closest approach at 2027/02/07 06:58:43 UTC

J2000 position of star is 05:35:14.5 +29:10:35
Equinox of date position of star is 05:36:38.7 +29:11:22
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 119 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=20.5

[RECON map]
TNO is 14.1 AU from the Sun and 13.5 AU from the Earth.
The TNO is moving 11.1 km/sec on the sky relative to the star, or, 4.1 arcsec/hr.
The 1-sigma error in the time of the event is 284 seconds.
The 1-sigma cross-track error in the shadow position is 1403 km.
The sky-plane scale is 9790.0 km/arcsec.

The TNO has an absolute magnitude Hv=8.8
Diameter=105.2 km assuming a 5% albedo -- 9.5 sec chord
Diameter=42.9 km assuming a 30% albedo -- 3.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 590218, (2027/02/07 06:59UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:28.7 +16:33:42  0.8 18.60 105
Alnath         05:28:00.5 +28:37:40  1.6  2.04 117
PPM 094619     05:41:01.8 +29:13:41  5.9  0.89 120
PPM 094457     05:33:57.6 +29:12:46  8.4  0.66 119
PPM 094558     05:38:18.0 +29:02:03 10.0  0.33 119
PPM 094521     05:37:01.2 +29:17:12 11.0  0.10 119
590218         05:36:58.0 +29:11:32 15.4       120
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 3.2 sigma about the mid-time.
The median site spacing is 33.3 km RECON observability=1.0 and success probability=38.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 06:52:36 -52.9 Dark Down 46.5 258.5 Up 06:37:36 - 07:07:36 1951
Kamloops 06:53:46 -51.0 Dark Down 55.3 245.7 Up 06:38:46 - 07:08:46 1762
Kelowna 06:53:40 -52.0 Dark Down 55.1 247.7 Up 06:38:40 - 07:08:40 1673
Peachland 06:53:41 -52.0 Dark Down 55.3 247.6 Up 06:38:41 - 07:08:41 1661
Summerland 06:53:41 -52.2 Dark Down 55.3 247.9 Up 06:38:41 - 07:08:41 1645
Penticton 06:53:40 -52.3 Dark Down 55.3 248.1 Up 06:38:40 - 07:08:40 1638
Oliver 06:53:39 -52.6 Dark Down 55.4 248.5 Up 06:38:39 - 07:08:39 1600
Anarchist Mountain Observatory 06:53:38 -52.8 Dark Down 55.4 249.0 Up 06:38:38 - 07:08:38 1581
Tonasket 06:53:38 -53.0 Dark Down 55.5 249.3 Up 06:38:38 - 07:08:38 1547
Victoria 06:54:00 -51.7 Dark Down 58.0 245.1 Up 06:39:00 - 07:09:00 1540
Okanogan 06:53:39 -53.2 Dark Down 55.7 249.6 Up 06:38:39 - 07:08:39 1511
Brewster 06:53:40 -53.4 Dark Down 56.0 249.8 Up 06:38:40 - 07:08:40 1482
Manson/Chelan 06:53:41 -53.4 Dark Down 56.3 249.7 Up 06:38:41 - 07:08:41 1460
Wenatchee 06:53:42 -53.8 Dark Down 56.5 250.2 Up 06:38:42 - 07:08:42 1409
Ellensburg 06:53:43 -54.0 Dark Down 56.8 250.5 Up 06:38:43 - 07:08:43 1365
Yakima 06:53:43 -54.3 Dark Down 56.9 251.1 Up 06:38:43 - 07:08:43 1320
Toppenish/White Swan 06:53:43 -54.6 Dark Down 56.9 251.6 Up 06:38:43 - 07:08:43 1296
PNWRO 06:53:33 -55.5 Dark Down 56.1 253.6 Up 06:38:33 - 07:08:33 1253
Goldendale 06:53:44 -54.9 Dark Down 57.4 252.0 Up 06:38:44 - 07:08:44 1237
The Dalles 06:53:47 -54.9 Dark Down 57.7 251.9 Up 06:38:47 - 07:08:47 1213
Maupin 06:53:46 -55.3 Dark Down 57.7 252.7 Up 06:38:46 - 07:08:46 1167
Sisters 06:53:48 -55.7 Dark Down 58.3 253.5 Up 06:38:48 - 07:08:48 1072
Bend 06:53:46 -56.0 Dark Down 58.2 254.1 Up 06:38:46 - 07:08:46 1045
Oregon Observatory 06:53:47 -56.1 Dark Down 58.3 254.3 Up 06:38:47 - 07:08:47 1027
North Lake 06:53:43 -56.8 Dark Down 58.1 255.8 Up 06:38:43 - 07:08:43 955
Chiloquin 06:53:49 -56.9 Dark Down 59.0 256.0 Up 06:38:49 - 07:08:49 883
Klamath Falls 06:53:49 -57.2 Dark Down 59.0 256.6 Up 06:38:49 - 07:08:49 845
Lakeview 06:53:40 -57.9 Dark Down 58.0 258.0 Up 06:38:40 - 07:08:40 836
Cedarville 06:53:39 -58.5 Dark Down 58.0 259.2 Up 06:38:39 - 07:08:39 763
Fall River/Burney 06:53:46 -58.3 Dark Down 59.0 258.9 Up 06:38:46 - 07:08:46 714
Dunrhomin 06:52:08 -64.6 Dark Down 47.1 271.6 Up 06:37:08 - 07:07:08 675
Susanville 06:53:42 -59.1 Dark Down 58.5 260.5 Up 06:38:42 - 07:08:42 642
Greenville 06:53:43 -59.2 Dark Down 58.8 260.7 Up 06:38:43 - 07:08:43 612
Gimple 06:53:42 -59.2 Dark Down 58.7 260.8 Up 06:38:42 - 07:08:42 611
Quincy 06:53:44 -59.3 Dark Down 58.8 261.1 Up 06:38:44 - 07:08:44 590
Portola 06:53:40 -59.7 Dark Down 58.5 261.6 Up 06:38:40 - 07:08:40 574
Reno 06:53:36 -60.2 Dark Down 58.0 262.6 Up 06:38:36 - 07:08:36 543
Carson City 06:53:35 -60.5 Dark Down 58.1 263.2 Up 06:38:35 - 07:08:35 503
Yerington 06:53:32 -60.9 Dark Down 57.6 264.0 Up 06:38:32 - 07:08:32 480
Gardnerville 06:53:35 -60.7 Dark Down 58.1 263.6 Up 06:38:35 - 07:08:35 476
Hawthorne 06:53:28 -61.5 Dark Down 57.3 265.1 Up 06:38:28 - 07:08:28 428
Tonopah 06:53:19 -62.6 Dark Down 56.2 266.7 Up 06:38:19 - 07:08:19 375
Lee Vining 06:53:31 -61.7 Dark Down 57.7 265.6 Up 06:38:31 - 07:08:31 366
Bishop 06:53:26 -62.5 Dark Down 57.2 267.0 Up 06:38:26 - 07:08:26 299
Beatty 06:53:16 -63.7 Dark Down 55.9 268.8 Up 06:38:16 - 07:08:16 246
Indian Springs 06:53:09 -64.5 Dark Down 55.1 269.9 Up 06:38:09 - 07:08:09 211
Henderson 06:53:04 -65.3 Dark Down 54.5 271.0 Up 06:38:04 - 07:08:04 152
Patrick 06:52:56 -66.3 Dark Down 53.6 272.5 Up 06:37:56 - 07:07:56 85
Kingman/Dolan Springs 06:52:58 -66.4 Dark Down 53.8 272.7 Up 06:37:58 - 07:07:58 60
Laughlin/Bullhead City 06:53:01 -66.1 Dark Down 54.2 272.5 Up 06:38:01 - 07:08:01 56
Mohave Valley 06:53:01 -66.4 Dark Down 54.2 272.8 Up 06:38:01 - 07:08:01 26
Lake Havasu City 06:53:00 -66.8 Dark Down 53.9 273.5 Up 06:38:00 - 07:08:00 -18
Parker 06:52:59 -67.1 Dark Down 53.9 274.0 Up 06:37:59 - 07:07:59 -57
Wildwood 06:53:28 -64.8 Dark Down 57.4 272.0 Up 06:38:28 - 07:08:28 -64
George/Scottsdale 06:52:43 -68.6 Dark Down 51.9 275.7 Up 06:37:43 - 07:07:43 -95
Idyllwild 06:53:16 -66.1 Dark Down 55.8 273.4 Up 06:38:16 - 07:08:16 -105
Calipatria 06:53:08 -67.2 Dark Down 54.8 274.9 Up 06:38:08 - 07:08:08 -172
Yuma 06:53:02 -68.0 Dark Down 54.0 275.8 Up 06:38:02 - 07:08:02 -218

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, (2027/02/07 06:59UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 18.60 105
Alnath         05:26:17.6 +28:36:23  1.6  2.04 117
PPM 094619     05:39:18.3 +29:12:54  5.9  0.89 120
PPM 094457     05:32:14.1 +29:11:43  8.4  0.66 119
PPM 094558     05:36:34.6 +29:01:09 10.0  0.33 119
PPM 094521     05:35:17.6 +29:16:16 11.0  0.10 119
590218         05:35:14.5 +29:10:35 15.4       119
Positions are for J2000

Event circumstances last updated at 2022/01/21 23:58:03 UT

Marc W. Buie, Southwest Research Institute

RECON