RECON: TNO occultation with 547893

Event between (547893) 10WN75 and star GA0860:01687808 with event index number of 2724589

Geocentric closest approach at 2029/02/16 05:43:49 UTC

J2000 position of star is 06:42:42.1 -02:05:15
Equinox of date position of star is 06:43:56.2 -02:06:47
Stellar brightness G=15.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 104 degrees from the moon. Moon is 7% illuminated.
Apparent brightness V=21.6

[RECON map]
Object is 37.0 AU from the Sun and 36.4 AU from the Earth.
Apparent velocity is 19.3 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 193 seconds.
The 1-sigma cross-track error in the shadow position is 3398 km.
The sky-plane scale is 26394.1 km/arcsec.

The object has an absolute magnitude Hv=5.8
Diameter=436.5 km assuming a 5% albedo -- 22.1 sec chord
Diameter=178.2 km assuming a 30% albedo -- 9.0 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 547893, (2029/02/16 05:44UT)
Object            RA         Dec     mag  sep  mel
Sirius         06:46:26.1 -16:45:21 -1.5 14.65 105
Saiph          05:49:08.3 -09:39:41  2.1 15.62  91
PPM 176439     06:49:47.7 -01:21:12  5.6  1.60 105
PPM 176376     06:42:51.4 -02:22:50  8.3  0.42 104
PPM 176393     06:44:28.6 -02:07:51  8.7  0.08 104
547893         06:44:10.2 -02:07:05 15.9       104
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 4.7 sigma about the mid-time.
The median site spacing is 13.5 km RECON observability=1.0 and success probability=12.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 05:45:17 -46.0 Dark Down 31.5 211.2 Up 05:30:17 - 06:00:17 2002
Dunrhomin 05:44:30 -55.7 Dark Down 41.1 216.7 Up 05:29:30 - 05:59:30 1575
Nikitin 05:44:30 -55.8 Dark Down 41.2 216.8 Up 05:29:30 - 05:59:30 1565
CU-SBO 05:44:30 -55.8 Dark Down 41.3 216.7 Up 05:29:30 - 05:59:30 1558
Kelowna 05:45:47 -41.9 Dark Down 36.9 196.1 Up 05:30:47 - 06:00:47 1397
Kamloops 05:45:52 -41.0 Dark Down 36.3 194.9 Up 05:30:52 - 06:00:52 1396
Peachland 05:45:48 -41.8 Dark Down 37.1 195.7 Up 05:30:48 - 06:00:48 1379
Penticton 05:45:46 -42.1 Dark Down 37.2 196.0 Up 05:30:46 - 06:00:46 1378
Summerland 05:45:46 -42.0 Dark Down 37.2 195.9 Up 05:30:46 - 06:00:46 1377
Anarchist Mountain Observatory 05:45:45 -42.5 Dark Down 37.7 196.4 Up 05:30:45 - 06:00:45 1363
Oliver 05:45:45 -42.3 Dark Down 37.6 196.1 Up 05:30:45 - 06:00:45 1362
Okanogan 05:45:43 -42.8 Dark Down 38.4 196.2 Up 05:30:43 - 06:00:43 1324
Brewster 05:45:42 -42.8 Dark Down 38.7 196.0 Up 05:30:42 - 06:00:42 1302
Manson/Chelan 05:45:43 -42.8 Dark Down 38.9 195.6 Up 05:30:43 - 06:00:43 1277
Wenatchee 05:45:42 -42.9 Dark Down 39.4 195.5 Up 05:30:42 - 06:00:42 1246
PNWRO 05:45:33 -44.5 Dark Down 40.5 197.6 Up 05:30:33 - 06:00:33 1241
Ellensburg 05:45:41 -43.1 Dark Down 39.8 195.3 Up 05:30:41 - 06:00:41 1217
Yakima 05:45:41 -43.3 Dark Down 40.2 195.4 Up 05:30:41 - 06:00:41 1196
Toppenish/White Swan 05:45:40 -43.5 Dark Down 40.4 195.6 Up 05:30:40 - 06:00:40 1192
Victoria 05:45:55 -40.6 Dark Down 38.8 191.4 Up 05:30:55 - 06:00:55 1167
The Dalles 05:45:39 -43.5 Dark Down 41.3 194.8 Up 05:30:39 - 06:00:39 1117
Maupin 05:45:38 -43.8 Dark Down 41.7 195.0 Up 05:30:38 - 06:00:38 1101
Sisters 05:45:37 -43.9 Dark Down 42.6 194.6 Up 05:30:37 - 06:00:37 1032
Bend 05:45:36 -44.2 Dark Down 42.8 195.0 Up 05:30:36 - 06:00:36 1031
Oregon Observatory 05:45:35 -44.2 Dark Down 43.0 194.8 Up 05:30:35 - 06:00:35 1016
Cedarville 05:45:25 -46.2 Dark Down 45.0 197.1 Up 05:30:25 - 06:00:25 947
Chiloquin 05:45:34 -44.6 Dark Down 44.4 194.6 Up 05:30:34 - 06:00:34 924
Klamath Falls 05:45:32 -44.9 Dark Down 44.7 194.7 Up 05:30:32 - 06:00:32 909
Patrick 05:44:43 -53.5 Dark Down 48.8 208.2 Up 05:29:43 - 05:59:43 904
George/Scottsdale 05:44:29 -55.8 Dark Down 49.5 211.9 Up 05:29:29 - 05:59:29 904
Fall River/Burney 05:45:28 -45.7 Dark Down 45.8 195.6 Up 05:30:28 - 06:00:28 860
Laughlin/Bullhead City 05:44:44 -53.2 Dark Down 49.3 207.4 Up 05:29:44 - 05:59:44 853
Yerington 05:45:13 -48.1 Dark Down 47.2 199.3 Up 05:30:13 - 06:00:13 850
Reno 05:45:17 -47.4 Dark Down 46.9 198.2 Up 05:30:17 - 06:00:17 850
Hawthorne 05:45:10 -48.7 Dark Down 47.5 200.2 Up 05:30:10 - 06:00:10 850
Beatty 05:44:58 -50.8 Dark Down 48.5 203.5 Up 05:29:58 - 05:59:58 847
Portola 05:45:20 -46.9 Dark Down 46.8 197.2 Up 05:30:20 - 06:00:20 834
Gimple 05:45:23 -46.5 Dark Down 46.5 196.5 Up 05:30:23 - 06:00:23 834
Carson City 05:45:16 -47.6 Dark Down 47.2 198.3 Up 05:30:16 - 06:00:16 831
Greenville 05:45:23 -46.4 Dark Down 46.5 196.4 Up 05:30:23 - 06:00:23 829
Lake Havasu City 05:44:41 -53.7 Dark Down 49.8 208.1 Up 05:29:41 - 05:59:41 825
Gardnerville 05:45:16 -47.8 Dark Down 47.4 198.5 Up 05:30:16 - 06:00:16 819
Quincy 05:45:22 -46.5 Dark Down 46.7 196.5 Up 05:30:22 - 06:00:22 818
Bishop 05:45:06 -49.5 Dark Down 48.6 201.0 Up 05:30:06 - 06:00:06 792
Lee Vining 05:45:10 -48.7 Dark Down 48.2 199.7 Up 05:30:10 - 06:00:10 792
Yuma 05:44:36 -54.3 Dark Down 51.5 208.6 Up 05:29:36 - 05:59:36 697
Calipatria 05:44:41 -53.4 Dark Down 51.5 207.1 Up 05:29:41 - 05:59:41 678
Idyllwild 05:44:47 -52.3 Dark Down 51.4 205.0 Up 05:29:47 - 05:59:47 656
Wildwood 05:44:58 -50.8 Dark Down 51.7 202.0 Up 05:29:58 - 05:59:58 581

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 547893, (2029/02/16 05:44UT)
Object            RA         Dec     mag  sep  mel
Sirius         06:45:08.0 -16:43:25 -1.5 14.65 105
Saiph          05:47:45.4 -09:40:11  2.1 15.62  91
PPM 176439     06:48:19.0 -01:19:08  5.6  1.60 105
PPM 176376     06:41:23.4 -02:21:03  8.3  0.42 104
PPM 176393     06:43:00.4 -02:06:00  8.7  0.08 104
547893         06:42:42.1 -02:05:15 15.9       104
Positions are for J2000

Event circumstances last updated at 2024/06/26 21:31:13 UT

Marc W. Buie, Southwest Research Institute

RECON