RECON: TNO occultation with 469708

Event between (469708) 05GE187 and star GA0840:11765100 with event index number of 2825749

Geocentric closest approach at 2029/09/01 07:44:55 UTC

J2000 position of star is 18:44:42.5 -04:42:40
Equinox of date position of star is 18:45:55.6 -04:41:10
Stellar brightness G=16.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 143 degrees from the moon. Moon is 49% illuminated.
Apparent brightness V=22.0

[RECON map]
Object is 26.6 AU from the Sun and 26.1 AU from the Earth.
Apparent velocity is 11.7 km/sec on the sky relative to the star, or, 2.2 arcsec/hr.
The 1-sigma error in the time of the event is 217 seconds.
The 1-sigma cross-track error in the shadow position is 2893 km.
The sky-plane scale is 18912.0 km/arcsec.

The object has an absolute magnitude Hv=7.6
Diameter=184.5 km assuming a 5% albedo -- 15.8 sec chord
Diameter=75.3 km assuming a 30% albedo -- 6.4 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 469708, (2029/09/01 07:45UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:13.9 -26:29:42  0.9 38.93 177
60Bet Oph      17:44:56.4 +04:33:25  2.8 17.89 147
Bet Sct        18:48:44.9 -04:42:49  4.2  0.62 143
PPM 202097     18:46:19.5 -05:09:18  8.4  0.48 144
PPM 202109     18:46:51.0 -04:45:21  9.4  0.16 143
469708         18:46:16.9 -04:40:43 16.3       143
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 4.1 sigma about the mid-time.
The median site spacing is 44.4 km RECON observability=0.7 and success probability=15.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 07:36:39 -30.9 Dark Up 18.3 237.4 Really Low 07:21:39 - 07:51:39 3649
Victoria 07:36:45 -32.8 Dark Up 21.1 235.3 Low 07:21:45 - 07:51:45 3549
Kelowna 07:36:35 -31.8 Dark Up 18.2 238.4 Really Low 07:21:35 - 07:51:35 3542
Peachland 07:36:37 -31.9 Dark Up 18.4 238.2 Really Low 07:21:37 - 07:51:37 3541
Summerland 07:36:36 -32.1 Dark Up 18.5 238.3 Really Low 07:21:36 - 07:51:36 3523
Penticton 07:36:36 -32.1 Dark Up 18.4 238.4 Really Low 07:21:36 - 07:51:36 3513
Oliver 07:36:34 -32.5 Dark Up 18.6 238.5 Really Low 07:21:34 - 07:51:34 3479
Anarchist Mountain Observatory 07:36:36 -32.7 Dark Up 18.6 238.7 Really Low 07:21:36 - 07:51:36 3457
Okanogan 07:36:34 -33.3 Dark Up 19.1 238.7 Really Low 07:21:34 - 07:51:34 3402
Sleaford 07:36:09 -29.4 Dark Up 9.7 249.3 Really Low 07:21:09 - 07:51:09 3396
Brewster 07:36:36 -33.6 Dark Up 19.3 238.6 Really Low 07:21:36 - 07:51:36 3382
Manson/Chelan 07:36:35 -33.7 Dark Up 19.6 238.4 Really Low 07:21:35 - 07:51:35 3374
Wenatchee 07:36:36 -34.2 Dark Up 20.0 238.4 Really Low 07:21:36 - 07:51:36 3335
Ellensburg 07:36:37 -34.6 Dark Up 20.3 238.3 Low 07:21:37 - 07:51:37 3302
Yakima 07:36:38 -35.0 Dark Up 20.5 238.4 Low 07:21:38 - 07:51:38 3264
Toppenish/White Swan 07:36:36 -35.2 Dark Up 20.6 238.6 Low 07:21:36 - 07:51:36 3237
The Dalles 07:36:39 -35.9 Dark Up 21.4 238.2 Low 07:21:39 - 07:51:39 3190
PNWRO 07:36:33 -35.7 Dark Up 19.9 240.0 Really Low 07:21:33 - 07:51:33 3148
Maupin 07:36:39 -36.3 Dark Up 21.6 238.4 Low 07:21:39 - 07:51:39 3146
Sisters 07:36:42 -37.1 Dark Up 22.3 238.3 Low 07:21:42 - 07:51:42 3079
Bend 07:36:41 -37.4 Dark Up 22.3 238.6 Low 07:21:41 - 07:51:41 3046
Oregon Observatory 07:36:42 -37.6 Dark Up 22.5 238.6 Low 07:21:42 - 07:51:42 3034
Chiloquin 07:36:43 -38.8 Dark Up 23.4 238.7 Low 07:21:43 - 07:51:43 2922
Klamath Falls 07:36:44 -39.2 Dark Up 23.5 238.9 Low 07:21:44 - 07:51:44 2886
Cedarville 07:36:41 -40.0 Dark Up 22.9 240.5 Low 07:21:41 - 07:51:41 2756
Fall River/Burney 07:36:43 -40.4 Dark Up 23.9 239.7 Low 07:21:43 - 07:51:43 2756
Greenville 07:36:44 -41.3 Dark Up 24.1 240.4 Low 07:21:44 - 07:51:44 2650
Gimple 07:36:41 -41.3 Dark Up 24.0 240.5 Low 07:21:41 - 07:51:41 2646
Quincy 07:36:44 -41.5 Dark Up 24.1 240.5 Low 07:21:44 - 07:51:44 2630
Portola 07:36:41 -41.7 Dark Up 23.9 240.9 Low 07:21:41 - 07:51:41 2599
Reno 07:36:40 -42.0 Dark Up 23.6 241.5 Low 07:21:40 - 07:51:40 2547
Carson City 07:36:40 -42.4 Dark Up 23.7 241.7 Low 07:21:40 - 07:51:40 2511
Gardnerville 07:36:41 -42.6 Dark Up 23.8 241.8 Low 07:21:41 - 07:51:41 2485
Yerington 07:36:41 -42.6 Dark Up 23.4 242.3 Low 07:21:41 - 07:51:41 2467
Hawthorne 07:36:39 -43.2 Dark Up 23.3 242.8 Low 07:21:39 - 07:51:39 2400
Lee Vining 07:36:41 -43.7 Dark Up 23.9 242.7 Low 07:21:41 - 07:51:41 2363
Bishop 07:36:41 -44.3 Dark Up 23.6 243.5 Low 07:21:41 - 07:51:41 2275
Beatty 07:36:37 -44.9 Dark Up 22.6 244.9 Low 07:21:37 - 07:51:37 2166
Dunrhomin 07:36:06 -40.9 Dark Up 13.1 252.1 Really Low 07:21:06 - 07:51:06 2138
Nikitin 07:36:07 -41.1 Dark Up 13.2 252.1 Really Low 07:21:07 - 07:51:07 2119
CU-SBO 07:36:07 -41.2 Dark Up 13.2 252.1 Really Low 07:21:07 - 07:51:07 2115
Wildwood 07:36:46 -47.6 Dark Up 25.2 244.7 Low 07:21:46 - 07:51:46 1958
Laughlin/Bullhead City 07:36:33 -46.7 Dark Up 21.8 247.1 Low 07:21:33 - 07:51:33 1909
Patrick 07:36:30 -46.5 Dark Up 21.1 247.5 Low 07:21:30 - 07:51:30 1908
Idyllwild 07:36:41 -48.1 Dark Up 23.9 246.2 Low 07:21:41 - 07:51:41 1846
Lake Havasu City 07:36:34 -47.4 Dark Up 21.8 247.5 Low 07:21:34 - 07:51:34 1832
Calipatria 07:36:37 -48.7 Dark Up 23.3 247.2 Low 07:21:37 - 07:51:37 1739
George/Scottsdale 07:36:28 -48.1 Dark Up 20.2 249.5 Low 07:21:28 - 07:51:28 1663
Yuma 07:36:38 -49.2 Dark Up 22.7 248.0 Low 07:21:38 - 07:51:38 1661

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 469708, (2029/09/01 07:45UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 38.93 177
60Bet Oph      17:43:28.3 +04:34:06  2.8 17.89 147
Bet Sct        18:47:10.5 -04:44:53  4.2  0.62 143
PPM 202097     18:44:44.8 -05:11:16  8.4  0.48 144
PPM 202109     18:45:16.6 -04:47:19  9.4  0.16 143
469708         18:44:42.5 -04:42:40 16.3       143
Positions are for J2000

Event circumstances last updated at 2022/12/16 03:21:01 UT

Marc W. Buie, Southwest Research Institute

RECON