RECON: TNO occultation with 02WL21

Event between 02WL21 and star GA1140:02631065 with event index number of 1269048

Geocentric closest approach at 2024/01/24 08:54:54 UTC

J2000 position of star is 06:58:01.4 +24:18:18
Equinox of date position of star is 06:59:12.5 +24:16:39
Stellar brightness G=16.0, use SENSEUP=128
Star is 6 degrees from the moon. Moon is 98% illuminated.
TNO apparent brightness V=24.2

[RECON map]
TNO is 42.2 AU from the Sun and 41.3 AU from the Earth.
The TNO is moving 23.8 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 1169 seconds.
The 1-sigma cross-track error in the shadow position is 2808 km.
The sky-plane scale is 29952.4 km/arcsec.

The TNO has an absolute magnitude Hv=7.9
Diameter=154.9 km assuming a 5% albedo -- 6.5 sec chord
Diameter=63.2 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 02WL21, (2024/01/24 08:55UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:47.3 +27:57:58  1.1 11.24   5
Alhena         06:39:06.1 +16:22:36  1.9  9.23  15
42Ome Gem      07:03:52.7 +24:10:44  5.2  1.00   5
PPM 096789     06:58:28.0 +24:36:34  7.8  0.41   6
PPM 096782     06:58:15.6 +24:15:51  9.8  0.28   6
02WL21         06:59:29.4 +24:16:15 16.0         6
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 0.8 sigma about the mid-time.
The median site spacing is 20.0 km RECON observability=1.0 and success probability=9.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 08:53:33 -58.2 Dark Up 54.0 236.8 Up 08:38:33 - 09:08:33 4643
Summerland 08:53:34 -58.5 Dark Up 54.3 236.8 Up 08:38:34 - 09:08:34 4610
Penticton 08:53:34 -58.5 Dark Up 54.3 237.0 Up 08:38:34 - 09:08:34 4606
Okanagan Falls 08:53:34 -58.7 Dark Up 54.4 237.2 Up 08:38:34 - 09:08:34 4588
Oliver 08:53:33 -58.9 Dark Up 54.5 237.5 Up 08:38:33 - 09:08:33 4574
Anarchist Mountain Observatory 08:53:32 -59.0 Dark Up 54.5 237.9 Up 08:38:32 - 09:08:32 4563
Oroville 08:53:32 -59.1 Dark Up 54.5 237.9 Up 08:38:32 - 09:08:32 4554
Tonasket 08:53:32 -59.3 Dark Up 54.7 238.2 Up 08:38:32 - 09:08:32 4533
Okanogan 08:53:30 -59.6 Dark Up 54.9 238.4 Up 08:38:30 - 09:08:30 4499
Brewster 08:53:31 -59.9 Dark Up 55.2 238.5 Up 08:38:31 - 09:08:31 4469
Manson/Chelan 08:53:32 -60.2 Dark Up 55.5 238.3 Up 08:38:32 - 09:08:32 4442
Entiat 08:53:30 -60.4 Dark Up 55.7 238.4 Up 08:38:30 - 09:08:30 4420
Wenatchee 08:53:31 -60.7 Dark Up 55.9 238.6 Up 08:38:31 - 09:08:31 4394
Ellensburg 08:53:30 -61.1 Dark Up 56.2 238.9 Up 08:38:30 - 09:08:30 4351
Pasco 08:53:25 -61.5 Dark Up 55.7 241.6 Up 08:38:25 - 09:08:25 4314
Yakima 08:53:29 -61.5 Dark Up 56.4 239.4 Up 08:38:29 - 09:08:29 4312
Toppenish/White Swan 08:53:28 -61.7 Dark Up 56.4 239.9 Up 08:38:28 - 09:08:28 4296
PNWRO 08:53:24 -61.7 Dark Up 55.7 242.2 Up 08:38:24 - 09:08:24 4296
George/Umatilla 08:53:25 -61.9 Dark Up 56.0 241.7 Up 08:38:25 - 09:08:25 4277
Goldendale 08:53:28 -62.3 Dark Up 57.0 240.1 Up 08:38:28 - 09:08:28 4234
The Dalles 08:53:29 -62.6 Dark Up 57.3 239.9 Up 08:38:29 - 09:08:29 4205
Maupin 08:53:28 -63.0 Dark Up 57.4 240.6 Up 08:38:28 - 09:08:28 4167
Niwot 08:52:35 -60.1 Dark Up 48.0 262.4 Up 08:37:35 - 09:07:35 4118
Madras/Culver 08:53:27 -63.5 Dark Up 57.7 241.3 Up 08:38:27 - 09:08:27 4114
SwRI 08:52:35 -60.2 Dark Up 48.1 262.5 Up 08:37:35 - 09:07:35 4105
Redmond 08:53:26 -63.9 Dark Up 57.9 241.7 Up 08:38:26 - 09:08:26 4079
Sisters 08:53:27 -63.9 Dark Up 58.2 241.2 Up 08:38:27 - 09:08:27 4072
Bend 08:53:26 -64.1 Dark Up 58.1 241.9 Up 08:38:26 - 09:08:26 4055
Oregon Observatory 08:53:26 -64.3 Dark Up 58.3 241.9 Up 08:38:26 - 09:08:26 4035
La Pine/Gilchrist 08:53:26 -64.5 Dark Up 58.4 242.2 Up 08:38:26 - 09:08:26 4014
North Lake 08:53:24 -64.8 Dark Up 58.2 243.5 Up 08:38:24 - 09:08:24 3986
Paisley 08:53:21 -65.2 Dark Up 58.3 244.7 Up 08:38:21 - 09:08:21 3942
Chiloquin 08:53:25 -65.6 Dark Up 59.2 243.4 Up 08:38:25 - 09:08:25 3898
Lakeview 08:53:20 -65.6 Dark Up 58.3 245.7 Up 08:38:20 - 09:08:20 3897
Klamath Falls 08:53:23 -65.9 Dark Up 59.3 244.0 Up 08:38:23 - 09:08:23 3867
Tulelake 08:53:23 -66.1 Dark Up 59.2 244.7 Up 08:38:23 - 09:08:23 3847
Cedarville 08:53:18 -66.1 Dark Up 58.5 246.9 Up 08:38:18 - 09:08:18 3837
Fall River/Burney 08:53:20 -66.9 Dark Up 59.5 246.2 Up 08:38:20 - 09:08:20 3760
Susanville 08:53:17 -67.3 Dark Up 59.3 248.0 Up 08:38:17 - 09:08:17 3716
Gimple 08:53:17 -67.6 Dark Up 59.5 248.2 Up 08:38:17 - 09:08:17 3684
Greenville 08:53:17 -67.6 Dark Up 59.6 248.1 Up 08:38:17 - 09:08:17 3682
Quincy 08:53:17 -67.8 Dark Up 59.6 248.5 Up 08:38:17 - 09:08:17 3662
Portola 08:53:15 -67.8 Dark Up 59.3 249.2 Up 08:38:15 - 09:08:15 3661
Reno 08:53:13 -67.8 Dark Up 59.0 250.3 Up 08:38:13 - 09:08:13 3651
Carson City 08:53:13 -68.1 Dark Up 59.1 250.9 Up 08:38:13 - 09:08:13 3616
Yerington 08:53:11 -68.1 Dark Up 58.7 251.8 Up 08:38:11 - 09:08:11 3613
Gardnerville 08:53:12 -68.3 Dark Up 59.1 251.3 Up 08:38:12 - 09:08:12 3593
Hawthorne 08:53:07 -68.3 Dark Up 58.4 253.1 Up 08:38:07 - 09:08:07 3581
Tonopah 08:53:03 -68.1 Dark Up 57.5 255.2 Up 08:38:03 - 09:08:03 3572
Lee Vining 08:53:08 -68.9 Dark Up 59.0 253.5 Up 08:38:08 - 09:08:08 3512
Bishop 08:53:04 -69.2 Dark Up 58.6 255.1 Up 08:38:04 - 09:08:04 3472
Beatty 08:52:59 -68.8 Dark Up 57.4 257.3 Up 08:37:59 - 09:07:59 3470
Indian Springs 08:52:55 -68.5 Dark Up 56.7 258.7 Up 08:37:55 - 09:07:55 3468
Henderson 08:52:52 -68.5 Dark Up 56.2 260.1 Up 08:37:52 - 09:07:52 3435
Lone Pine 08:53:02 -69.6 Dark Up 58.5 256.6 Up 08:38:02 - 09:08:02 3405
Patrick 08:52:47 -68.4 Dark Up 55.5 261.8 Up 08:37:47 - 09:07:47 3405
DCO 08:52:45 -68.2 Dark Up 54.9 262.8 Up 08:37:45 - 09:07:45 3395
Searchlight/Boulder City 08:52:51 -68.9 Dark Up 56.3 261.0 Up 08:37:51 - 09:07:51 3379
Kingman/Dolan Springs 08:52:48 -68.6 Dark Up 55.6 262.0 Up 08:37:48 - 09:07:48 3377
Laughlin/Bullhead City 08:52:49 -68.9 Dark Up 56.1 261.7 Up 08:37:49 - 09:07:49 3360
Mohave Valley 08:52:48 -69.1 Dark Up 56.1 262.1 Up 08:37:48 - 09:07:48 3333
Lake Havasu City 08:52:47 -69.3 Dark Up 55.9 262.8 Up 08:37:47 - 09:07:47 3300
Parker 08:52:46 -69.5 Dark Up 56.0 263.4 Up 08:37:46 - 09:07:46 3266
CPSLO 08:53:08 -71.9 Dark Up 60.9 256.4 Up 08:38:08 - 09:08:08 3204
Blythe 08:52:46 -70.0 Dark Up 56.3 263.9 Up 08:37:46 - 09:07:46 3204
Idyllwild 08:52:53 -71.2 Dark Up 58.0 262.3 Up 08:37:53 - 09:07:53 3154
Wildwood 08:52:59 -71.9 Dark Up 59.5 260.3 Up 08:37:59 - 09:07:59 3137
Calipatria 08:52:48 -70.9 Dark Up 57.1 264.0 Up 08:37:48 - 09:07:48 3127
Yuma 08:52:45 -70.7 Dark Up 56.4 265.3 Up 08:37:45 - 09:07:45 3110

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 02WL21, (2024/01/24 08:55UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1 11.24   5
Alhena         06:37:42.8 +16:23:57  1.9  9.23  15
42Ome Gem      07:02:24.8 +24:12:55  5.2  1.00   5
PPM 096789     06:56:59.7 +24:38:34  7.8  0.41   6
PPM 096782     06:56:47.6 +24:17:51  9.8  0.28   6
02WL21         06:58:01.4 +24:18:18 16.0         6
Positions are for J2000

Event circumstances last updated at 2019/06/08 06:27:11 UT

Marc W. Buie, Southwest Research Institute

RECON