RECON: TNO occultation with 342842

Event between (342842) 08YB3 and star GA1020:14751310 with event index number of 2826324

Geocentric closest approach at 2029/09/18 04:39:01 UTC

J2000 position of star is 19:37:51.2 +12:55:28
Equinox of date position of star is 19:38:58.8 +12:58:50
Stellar brightness G=15.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 32 degrees from the moon. Moon is 81% illuminated.
Apparent brightness V=21.9

[RECON map]
Object is 16.6 AU from the Sun and 16.2 AU from the Earth.
Apparent velocity is 26.0 km/sec on the sky relative to the star, or, 8.0 arcsec/hr.
The 1-sigma error in the time of the event is 98 seconds.
The 1-sigma cross-track error in the shadow position is 1589 km.
The sky-plane scale is 11720.7 km/arcsec.

The object has an absolute magnitude Hv=9.5
Diameter=82.8 km assuming a 5% albedo -- 3.0 sec chord
Diameter=33.8 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 342842, (2029/09/18 04:39UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:56.6 +38:48:45  0.0 29.17  61
Tarazed        19:47:40.3 +10:41:16  2.7  3.09  29
PPM 136767     19:42:28.1 +13:53:12  5.8  1.19  32
PPM 136537     19:36:14.9 +13:08:41  8.3  0.74  32
PPM 136662     19:39:32.2 +13:07:06  9.0  0.14  32
342842         19:39:14.2 +12:59:36 15.5        31
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 24.7 km RECON observability=1.0 and success probability=29.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Victoria 04:36:48 -22.2 Dark Up 53.7 194.4 Up 04:28:09 - 04:45:26 1883
Kamloops 04:36:38 -22.7 Dark Up 51.1 198.4 Up 04:27:59 - 04:45:16 1830
Peachland 04:36:40 -23.5 Dark Up 51.8 199.7 Up 04:28:01 - 04:45:18 1739
Kelowna 04:36:39 -23.6 Dark Up 51.6 200.1 Up 04:28:00 - 04:45:17 1728
Summerland 04:36:40 -23.7 Dark Up 51.9 199.9 Up 04:28:01 - 04:45:18 1724
Penticton 04:36:39 -23.8 Dark Up 52.0 200.1 Up 04:28:01 - 04:45:18 1713
Oliver 04:36:40 -24.0 Dark Up 52.3 200.2 Up 04:28:02 - 04:45:19 1691
Anarchist Mountain Observatory 04:36:40 -24.2 Dark Up 52.4 200.6 Up 04:28:02 - 04:45:19 1669
Manson/Chelan 04:36:44 -24.4 Dark Up 53.6 199.9 Up 04:28:06 - 04:45:23 1647
Okanogan 04:36:43 -24.4 Dark Up 53.1 200.6 Up 04:28:04 - 04:45:21 1642
Brewster 04:36:43 -24.4 Dark Up 53.4 200.4 Up 04:28:05 - 04:45:22 1638
Wenatchee 04:36:46 -24.5 Dark Up 54.1 199.9 Up 04:28:08 - 04:45:25 1628
Ellensburg 04:36:48 -24.6 Dark Up 54.6 199.7 Up 04:28:09 - 04:45:26 1616
Yakima 04:36:49 -24.8 Dark Up 55.0 199.9 Up 04:28:10 - 04:45:27 1592
The Dalles 04:36:52 -25.0 Dark Up 56.0 199.4 Up 04:28:14 - 04:45:31 1570
Toppenish/White Swan 04:36:49 -25.1 Dark Up 55.1 200.3 Up 04:28:10 - 04:45:27 1568
Maupin 04:36:54 -25.3 Dark Up 56.4 199.8 Up 04:28:15 - 04:45:32 1537
Sisters 04:36:57 -25.5 Dark Up 57.3 199.4 Up 04:28:18 - 04:45:35 1515
Bend 04:36:57 -25.7 Dark Up 57.5 200.0 Up 04:28:18 - 04:45:35 1483
Oregon Observatory 04:36:58 -25.8 Dark Up 57.7 199.8 Up 04:28:19 - 04:45:36 1482
PNWRO 04:36:47 -26.1 Dark Up 55.1 202.9 Up 04:28:09 - 04:45:26 1451
Chiloquin 04:37:02 -26.2 Dark Up 59.0 199.8 Up 04:28:24 - 04:45:41 1428
Klamath Falls 04:37:03 -26.4 Dark Up 59.3 200.2 Up 04:28:24 - 04:45:41 1401
Fall River/Burney 04:37:05 -27.2 Dark Up 60.3 201.7 Up 04:28:27 - 04:45:44 1302
Cedarville 04:37:02 -27.8 Dark Up 59.5 203.6 Up 04:28:23 - 04:45:40 1249
Greenville 04:37:07 -28.0 Dark Up 61.0 203.1 Up 04:28:29 - 04:45:46 1213
Gimple 04:37:07 -28.0 Dark Up 61.0 203.3 Up 04:28:29 - 04:45:46 1207
Quincy 04:37:08 -28.1 Dark Up 61.2 203.3 Up 04:28:30 - 04:45:47 1200
Portola 04:37:08 -28.5 Dark Up 61.2 204.3 Up 04:28:29 - 04:45:46 1159
Sleaford 04:36:13 -28.4 Dark Up 45.6 217.7 Up 04:27:35 - 04:44:52 1154
Reno 04:37:07 -29.0 Dark Up 61.2 205.7 Up 04:28:29 - 04:45:46 1097
Carson City 04:37:08 -29.2 Dark Up 61.5 206.1 Up 04:28:30 - 04:45:47 1072
Gardnerville 04:37:09 -29.4 Dark Up 61.7 206.4 Up 04:28:30 - 04:45:47 1053
Yerington 04:37:08 -29.8 Dark Up 61.5 207.4 Up 04:28:29 - 04:45:46 1015
Hawthorne 04:37:08 -30.3 Dark Up 61.7 208.9 Up 04:28:30 - 04:45:47 948
Lee Vining 04:37:10 -30.3 Dark Up 62.4 208.5 Up 04:28:32 - 04:45:49 945
Bishop 04:37:11 -31.1 Dark Up 62.6 210.4 Up 04:28:32 - 04:45:49 854
Beatty 04:37:09 -32.5 Dark Up 62.3 214.0 Up 04:28:30 - 04:45:47 708
Wildwood 04:37:21 -32.6 Dark Up 65.5 213.7 Up 04:28:43 - 04:46:00 652
Idyllwild 04:37:19 -34.1 Dark Up 64.8 217.9 Up 04:28:40 - 04:45:57 489
Laughlin/Bullhead City 04:37:10 -34.9 Dark Up 62.6 220.0 Up 04:28:32 - 04:45:49 434
Patrick 04:37:08 -35.2 Dark Up 62.1 220.9 Up 04:28:30 - 04:45:47 401
Lake Havasu City 04:37:12 -35.4 Dark Up 63.0 221.3 Up 04:28:33 - 04:45:50 369
Calipatria 04:37:18 -35.3 Dark Up 64.7 221.0 Up 04:28:40 - 04:45:57 360
Yuma 04:37:18 -36.2 Dark Up 64.5 223.3 Up 04:28:39 - 04:45:56 265
Dunrhomin 04:36:38 -37.5 Dark Up 53.9 228.5 Up 04:28:00 - 04:45:17 192
Nikitin 04:36:39 -37.6 Dark Up 54.0 228.6 Up 04:28:00 - 04:45:17 179
CU-SBO 04:36:39 -37.6 Dark Up 54.1 228.6 Up 04:28:01 - 04:45:18 179
George/Scottsdale 04:37:09 -37.5 Dark Up 62.2 226.6 Up 04:28:31 - 04:45:48 138

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 342842, (2029/09/18 04:39UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:08  0.0 29.17  61
Tarazed        19:46:15.6 +10:36:48  2.7  3.09  29
PPM 136767     19:41:05.5 +13:48:57  5.8  1.19  32
PPM 136537     19:34:51.9 +13:04:40  8.3  0.74  32
PPM 136662     19:38:09.2 +13:02:57  9.0  0.14  32
342842         19:37:51.2 +12:55:28 15.5        32
Positions are for J2000

Event circumstances last updated at 2024/03/08 21:31:04 UT

Marc W. Buie, Southwest Research Institute

RECON