RECON: TNO occultation with 79969

Event between (79969) 99CP133 and star GA0720:05164348 with event index number of 2670205

Geocentric closest approach at 2029/01/03 11:47:13 UTC

J2000 position of star is 14:13:01.3 -16:16:59
Equinox of date position of star is 14:14:21.9 -16:23:49
Stellar brightness G=16.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 77 degrees from the moon. Moon is 90% illuminated.
Apparent brightness V=23.2

[RECON map]
Object is 34.3 AU from the Sun and 34.7 AU from the Earth.
Apparent velocity is 17.3 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 390 seconds.
The 1-sigma cross-track error in the shadow position is 5218 km.
The sky-plane scale is 25173.2 km/arcsec.

The object has an absolute magnitude Hv=7.7
Diameter=170.6 km assuming a 5% albedo -- 9.9 sec chord
Diameter=69.7 km assuming a 30% albedo -- 4.0 sec chord
Dynamical classification is 5:4E
 
 
 
 
 
 

Star training set for 79969, (2029/01/03 11:47UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:43.6 -11:18:42  1.0 12.69  64
PPM 228402     14:12:25.9 -16:26:16  4.2  0.52  76
PPM 228540     14:17:25.7 -16:12:54  8.0  0.71  77
PPM 228474     14:15:00.5 -16:29:36  9.1  0.12  77
79969          14:14:36.8 -16:25:04 16.7        77
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 2.3 sigma about the mid-time.
The median site spacing is 15.4 km RECON observability=0.2 and success probability=2.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 11:42:38 -30.8 Dark Up 13.3 140.5 Really Low 11:27:38 - 11:57:38 9793
Kamloops 11:42:06 -40.0 Dark Up 7.7 127.7 Really Low 11:27:06 - 11:57:06 9219
Kelowna 11:42:05 -39.6 Dark Up 8.7 128.4 Really Low 11:27:05 - 11:57:05 9184
Peachland 11:42:01 -39.8 Dark Up 8.6 128.1 Really Low 11:27:01 - 11:57:01 9166
Summerland 11:42:04 -39.8 Dark Up 8.7 128.2 Really Low 11:27:04 - 11:57:04 9157
Penticton 11:42:05 -39.7 Dark Up 8.8 128.3 Really Low 11:27:05 - 11:57:05 9156
Oliver 11:42:04 -39.8 Dark Up 9.1 128.2 Really Low 11:27:04 - 11:57:04 9128
Anarchist Mountain Observatory 11:42:04 -39.7 Dark Up 9.3 128.4 Really Low 11:27:04 - 11:57:04 9121
Okanogan 11:42:00 -40.0 Dark Up 9.5 128.1 Really Low 11:27:00 - 11:57:00 9062
Brewster 11:41:58 -40.2 Dark Up 9.6 127.9 Really Low 11:26:58 - 11:56:58 9033
Manson/Chelan 11:42:00 -40.5 Dark Up 9.5 127.6 Really Low 11:27:00 - 11:57:00 9004
Dunrhomin 11:42:23 -29.9 Dark Up 22.6 138.7 Low 11:27:23 - 11:57:23 8960
Wenatchee 11:41:58 -40.7 Dark Up 9.7 127.4 Really Low 11:26:58 - 11:56:58 8960
Victoria 11:41:56 -42.5 Dark Up 7.4 125.0 Really Low 11:26:56 - 11:56:56 8948
Nikitin 11:42:23 -29.9 Dark Up 22.7 138.6 Low 11:27:23 - 11:57:23 8945
CU-SBO 11:42:24 -30.0 Dark Up 22.8 138.5 Low 11:27:24 - 11:57:24 8936
Ellensburg 11:41:56 -40.9 Dark Up 9.8 127.1 Really Low 11:26:56 - 11:56:56 8918
PNWRO 11:41:58 -39.9 Dark Up 11.4 128.3 Really Low 11:26:58 - 11:56:58 8894
Yakima 11:41:56 -41.0 Dark Up 10.1 127.0 Really Low 11:26:56 - 11:56:56 8884
Toppenish/White Swan 11:41:56 -40.9 Dark Up 10.3 127.1 Really Low 11:26:56 - 11:56:56 8872
The Dalles 11:41:52 -41.6 Dark Up 10.3 126.4 Really Low 11:26:52 - 11:56:52 8780
Maupin 11:41:53 -41.6 Dark Up 10.6 126.4 Really Low 11:26:53 - 11:56:53 8748
Sisters 11:41:47 -42.1 Dark Up 10.9 125.9 Really Low 11:26:47 - 11:56:47 8657
Bend 11:41:50 -41.9 Dark Up 11.2 126.0 Really Low 11:26:50 - 11:56:50 8646
Oregon Observatory 11:41:49 -42.0 Dark Up 11.2 125.9 Really Low 11:26:49 - 11:56:49 8626
Chiloquin 11:41:44 -42.5 Dark Up 11.7 125.4 Really Low 11:26:44 - 11:56:44 8497
Klamath Falls 11:41:45 -42.5 Dark Up 11.9 125.4 Really Low 11:26:45 - 11:56:45 8471
Cedarville 11:41:47 -41.4 Dark Up 13.3 126.5 Really Low 11:26:47 - 11:56:47 8470
Fall River/Burney 11:41:43 -42.4 Dark Up 12.8 125.4 Really Low 11:26:43 - 11:56:43 8381
Gimple 11:41:43 -42.0 Dark Up 13.7 125.7 Really Low 11:26:43 - 11:56:43 8321
Greenville 11:41:44 -42.1 Dark Up 13.7 125.6 Really Low 11:26:44 - 11:56:44 8318
Reno 11:41:46 -41.3 Dark Up 14.7 126.3 Really Low 11:26:46 - 11:56:46 8310
Portola 11:41:44 -41.8 Dark Up 14.1 125.9 Really Low 11:26:44 - 11:56:44 8308
Quincy 11:41:42 -42.1 Dark Up 13.8 125.6 Really Low 11:26:42 - 11:56:42 8301
Yerington 11:41:46 -40.8 Dark Up 15.4 126.7 Really Low 11:26:46 - 11:56:46 8286
Carson City 11:41:45 -41.3 Dark Up 14.9 126.3 Really Low 11:26:45 - 11:56:45 8279
Hawthorne 11:41:44 -40.4 Dark Up 16.1 127.0 Really Low 11:26:44 - 11:56:44 8266
Gardnerville 11:41:44 -41.3 Dark Up 15.1 126.3 Really Low 11:26:44 - 11:56:44 8259
Beatty 11:41:49 -38.9 Dark Up 18.2 128.1 Really Low 11:26:49 - 11:56:49 8198
Lee Vining 11:41:44 -40.8 Dark Up 16.1 126.5 Really Low 11:26:44 - 11:56:44 8197
Patrick 11:41:54 -36.5 Dark Up 21.0 129.9 Low 11:26:54 - 11:56:54 8188
Bishop 11:41:46 -40.2 Dark Up 16.9 126.9 Really Low 11:26:46 - 11:56:46 8173
Laughlin/Bullhead City 11:41:54 -37.1 Dark Up 20.7 129.3 Low 11:26:54 - 11:56:54 8136
George/Scottsdale 11:42:00 -34.7 Dark Up 23.4 131.0 Low 11:27:00 - 11:57:00 8126
Lake Havasu City 11:41:53 -36.8 Dark Up 21.3 129.3 Low 11:26:53 - 11:56:53 8087
Idyllwild 11:41:47 -38.8 Dark Up 20.2 127.2 Low 11:26:47 - 11:56:47 7916
Yuma 11:41:50 -36.9 Dark Up 22.2 128.5 Low 11:26:50 - 11:56:50 7912
Calipatria 11:41:49 -37.7 Dark Up 21.4 127.9 Low 11:26:49 - 11:56:49 7912
Wildwood 11:41:40 -40.4 Dark Up 18.7 125.9 Really Low 11:26:40 - 11:56:40 7869

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 79969, (2029/01/03 11:47UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 12.69  64
PPM 228402     14:10:50.5 -16:18:08  4.2  0.52  76
PPM 228540     14:15:50.2 -16:04:53  8.0  0.71  77
PPM 228474     14:13:25.0 -16:21:32  9.1  0.12  77
79969          14:13:01.3 -16:16:59 16.7        77
Positions are for J2000

Event circumstances last updated at 2024/06/25 21:30:40 UT

Marc W. Buie, Southwest Research Institute

RECON