RECON: TNO occultation with 10TL182

Event between 10TL182 and star GA1020:00236596 with event index number of 2104475

Geocentric closest approach at 2027/12/22 08:23:23 UTC

J2000 position of star is 02:36:20.9 +13:39:05
Equinox of date position of star is 02:37:39.5 +13:45:17
Stellar brightness G=15.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 163 degrees from the moon. Moon is 29% illuminated.
Apparent brightness V=22.7

[RECON map]
Object is 41.3 AU from the Sun and 40.6 AU from the Earth.
Apparent velocity is 15.1 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 453 seconds.
The 1-sigma cross-track error in the shadow position is 2931 km.
The sky-plane scale is 29445.2 km/arcsec.

The object has an absolute magnitude Hv=6.5
Diameter=303.4 km assuming a 5% albedo -- 20.1 sec chord
Diameter=123.9 km assuming a 30% albedo -- 8.2 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 10TL182, (2027/12/22 08:23UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:31.7 +16:33:49  0.8 28.98 134
Menkar         03:03:44.7 +04:11:52  2.5 11.50 154
31 Ari         02:38:09.6 +12:34:03  6.1  1.21 163
PPM 118376     02:37:51.4 +13:47:19  8.2  0.02 163
10TL182        02:37:52.7 +13:46:19 15.0       162
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 2.0 sigma about the mid-time.
The median site spacing is 34.3 km RECON observability=1.0 and success probability=22.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 08:18:06 -57.9 Dark Down 22.9 262.8 Low 08:03:06 - 08:33:06 789
Kamloops 08:18:34 -62.5 Dark Down 31.9 251.3 Up 08:03:34 - 08:33:34 574
Kelowna 08:18:29 -63.2 Dark Down 31.6 252.6 Up 08:03:29 - 08:33:29 498
Peachland 08:18:30 -63.4 Dark Down 31.8 252.4 Up 08:03:30 - 08:33:30 487
Summerland 08:18:29 -63.5 Dark Down 31.8 252.5 Up 08:03:29 - 08:33:29 473
Penticton 08:18:28 -63.6 Dark Down 31.8 252.7 Up 08:03:28 - 08:33:28 466
Oliver 08:18:28 -63.9 Dark Down 31.9 252.9 Up 08:03:28 - 08:33:28 432
Anarchist Mountain Observatory 08:18:26 -64.0 Dark Down 31.8 253.1 Up 08:03:26 - 08:33:26 416
Victoria 08:18:37 -64.9 Dark Down 34.5 249.9 Up 08:03:37 - 08:33:37 358
Okanogan 08:18:25 -64.7 Dark Down 32.1 253.3 Up 08:03:25 - 08:33:25 352
Brewster 08:18:25 -65.0 Dark Down 32.3 253.3 Up 08:03:25 - 08:33:25 325
Manson/Chelan 08:18:25 -65.2 Dark Down 32.6 253.1 Up 08:03:25 - 08:33:25 303
Wenatchee 08:18:25 -65.7 Dark Down 32.9 253.3 Up 08:03:25 - 08:33:25 256
Ellensburg 08:18:24 -66.2 Dark Down 33.1 253.3 Up 08:03:24 - 08:33:24 214
Yakima 08:18:23 -66.6 Dark Down 33.3 253.6 Up 08:03:23 - 08:33:23 174
Toppenish/White Swan 08:18:22 -66.8 Dark Down 33.2 253.8 Up 08:03:22 - 08:33:22 152
PNWRO 08:18:17 -66.9 Dark Down 32.3 255.3 Up 08:03:17 - 08:33:17 121
The Dalles 08:18:22 -67.6 Dark Down 34.0 253.7 Up 08:03:22 - 08:33:22 72
Maupin 08:18:21 -68.0 Dark Down 34.0 254.0 Up 08:03:21 - 08:33:21 30
Sisters 08:18:20 -69.0 Dark Down 34.6 254.2 Up 08:03:20 - 08:33:20 -60
Bend 08:18:19 -69.2 Dark Down 34.5 254.6 Up 08:03:19 - 08:33:19 -83
Oregon Observatory 08:18:19 -69.3 Dark Down 34.6 254.6 Up 08:03:19 - 08:33:19 -101
Chiloquin 08:18:17 -70.7 Dark Down 35.3 255.1 Up 08:03:17 - 08:33:17 -237
Klamath Falls 08:18:16 -71.0 Dark Down 35.3 255.4 Up 08:03:16 - 08:33:16 -272
Cedarville 08:18:09 -71.5 Dark Down 34.3 257.1 Up 08:03:09 - 08:33:09 -340
Dunrhomin 08:17:25 -66.4 Dark Down 23.4 268.3 Low 08:02:25 - 08:32:25 -367
Nikitin 08:17:25 -66.6 Dark Down 23.4 268.4 Low 08:02:25 - 08:32:25 -386
CU-SBO 08:17:25 -66.7 Dark Down 23.5 268.4 Low 08:02:25 - 08:32:25 -393
Fall River/Burney 08:18:12 -72.1 Dark Down 35.3 256.5 Up 08:03:12 - 08:33:12 -394
Greenville 08:18:09 -73.0 Dark Down 35.2 257.5 Up 08:03:09 - 08:33:09 -487
Gimple 08:18:08 -72.9 Dark Down 35.1 257.5 Up 08:03:08 - 08:33:08 -487
Quincy 08:18:08 -73.2 Dark Down 35.2 257.6 Up 08:03:08 - 08:33:08 -508
Portola 08:18:07 -73.2 Dark Down 34.9 258.0 Up 08:03:07 - 08:33:07 -519
Reno 08:18:04 -73.3 Dark Down 34.5 258.7 Up 08:03:04 - 08:33:04 -545
Carson City 08:18:03 -73.7 Dark Down 34.5 259.0 Up 08:03:03 - 08:33:03 -583
Yerington 08:18:01 -73.7 Dark Down 34.1 259.5 Up 08:03:01 - 08:33:01 -601
Gardnerville 08:18:02 -73.9 Dark Down 34.6 259.2 Up 08:03:02 - 08:33:02 -608
Hawthorne 08:17:58 -74.0 Dark Down 33.8 260.2 Up 08:02:58 - 08:32:58 -648
Lee Vining 08:17:58 -74.7 Dark Down 34.3 260.3 Up 08:02:58 - 08:32:58 -709
Bishop 08:17:55 -75.0 Dark Down 33.8 261.1 Up 08:02:55 - 08:32:55 -770
Beatty 08:17:49 -74.8 Dark Down 32.6 262.5 Up 08:02:49 - 08:32:49 -811
Patrick 08:17:37 -74.7 Dark Down 30.5 265.3 Up 08:02:37 - 08:32:37 -952
Laughlin/Bullhead City 08:17:38 -75.3 Dark Down 31.1 265.0 Up 08:02:38 - 08:32:38 -983
Lake Havasu City 08:17:36 -75.6 Dark Down 30.9 265.5 Up 08:02:36 - 08:32:36 -1054
George/Scottsdale 08:17:28 -74.7 Dark Down 29.0 267.4 Low 08:02:28 - 08:32:28 -1119
Wildwood 08:17:50 -78.0 Dark Down 34.4 263.2 Up 08:02:50 - 08:32:50 -1120
Idyllwild 08:17:43 -77.5 Dark Down 32.9 264.6 Up 08:02:43 - 08:32:43 -1150
Calipatria 08:17:38 -77.3 Dark Down 32.0 265.7 Up 08:02:38 - 08:32:38 -1209
Yuma 08:17:34 -77.1 Dark Down 31.3 266.4 Up 08:02:34 - 08:32:34 -1250

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 10TL182, (2027/12/22 08:23UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 28.98 134
Menkar         03:02:16.8 +04:05:21  2.5 11.50 154
31 Ari         02:36:38.3 +12:26:50  6.1  1.21 163
PPM 118376     02:36:19.6 +13:40:05  8.2  0.02 163
10TL182        02:36:20.9 +13:39:05 15.0       163
Positions are for J2000

Event circumstances last updated at 2023/12/17 04:36:37 UT

Marc W. Buie, Southwest Research Institute

RECON