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 06:59:15.4 +24:16:35
Stellar brightness G=16.0, use SENSEUP=128
Star is 6 degrees from the moon. Moon is 98% illuminated.
TNO apparent brightness V=26.3

[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=10.0
Diameter=154.9 km assuming a 5% albedo -- 2.5 sec chord
Diameter=63.2 km assuming a 30% albedo -- 1.0 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 21.1 km RECON observability=1.0 and success probability=9.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 08:53:34 -57.8 Dark Up 53.8 236.5 Up 08:38:34 - 09:08:34 4676
Kelowna 08:53:34 -58.2 Dark Up 54.1 236.8 Up 08:38:34 - 09:08:34 4638
Peachland 08:53:34 -58.4 Dark Up 54.3 236.5 Up 08:38:34 - 09:08:34 4621
Summerland 08:53:34 -58.5 Dark Up 54.3 236.8 Up 08:38:34 - 09:08:34 4610
Penticton 08:53:33 -58.5 Dark Up 54.3 237.0 Up 08:38:33 - 09:08:33 4606
Oliver 08:53:32 -58.9 Dark Up 54.5 237.5 Up 08:38:32 - 09:08:32 4574
Anarchist Mountain Observatory 08:53:32 -59.0 Dark Up 54.5 237.9 Up 08:38:32 - 09:08:32 4563
Tonasket 08:53:30 -59.3 Dark Up 54.7 238.2 Up 08:38:30 - 09:08:30 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 4470
Manson/Chelan 08:53:31 -60.2 Dark Up 55.5 238.3 Up 08:38:31 - 09:08:31 4442
Victoria 08:53:41 -60.2 Dark Up 56.9 233.3 Up 08:38:41 - 09:08:41 4432
Entiat 08:53:31 -60.4 Dark Up 55.7 238.4 Up 08:38:31 - 09:08:31 4420
Wenatchee 08:53:31 -60.7 Dark Up 55.9 238.6 Up 08:38:31 - 09:08:31 4394
Ellensburg 08:53:31 -61.1 Dark Up 56.2 238.9 Up 08:38:31 - 09:08:31 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 4313
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
Goldendale 08:53:28 -62.3 Dark Up 57.0 240.1 Up 08:38:28 - 09:08:28 4235
The Dalles 08:53:29 -62.6 Dark Up 57.3 239.9 Up 08:38:29 - 09:08:29 4205
Maupin 08:53:29 -63.0 Dark Up 57.4 240.6 Up 08:38:29 - 09:08:29 4168
Niwot 08:52:35 -60.1 Dark Up 48.0 262.4 Up 08:37:35 - 09:07:35 4119
SwRI 08:52:35 -60.2 Dark Up 48.1 262.5 Up 08:37:35 - 09:07:35 4106
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 4056
Oregon Observatory 08:53:26 -64.3 Dark Up 58.3 241.9 Up 08:38:26 - 09:08:26 4036
La Pine/Gilchrist 08:53:26 -64.5 Dark Up 58.4 242.2 Up 08:38:26 - 09:08:26 4015
North Lake 08:53:24 -64.8 Dark Up 58.2 243.5 Up 08:38:24 - 09:08:24 3987
Paisley 08:53:22 -65.2 Dark Up 58.3 244.7 Up 08:38:22 - 09:08:22 3942
Lakeview 08:53:19 -65.6 Dark Up 58.3 245.7 Up 08:38:19 - 09:08:19 3898
Klamath Falls 08:53:24 -65.9 Dark Up 59.3 244.0 Up 08:38:24 - 09:08:24 3867
Cedarville 08:53:18 -66.1 Dark Up 58.5 246.9 Up 08:38:18 - 09:08:18 3838
Fall River/Burney 08:53:21 -66.9 Dark Up 59.5 246.2 Up 08:38:21 - 09:08:21 3761
Susanville 08:53:18 -67.3 Dark Up 59.3 248.0 Up 08:38:18 - 09:08:18 3717
Gimple 08:53:17 -67.6 Dark Up 59.5 248.2 Up 08:38:17 - 09:08:17 3684
Greenville 08:53:18 -67.6 Dark Up 59.6 248.1 Up 08:38:18 - 09:08:18 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 3662
Reno 08:53:13 -67.8 Dark Up 59.0 250.3 Up 08:38:13 - 09:08:13 3652
Carson City 08:53:13 -68.1 Dark Up 59.1 250.9 Up 08:38:13 - 09:08:13 3617
Yerington 08:53:10 -68.1 Dark Up 58.7 251.8 Up 08:38:10 - 09:08:10 3614
Gardnerville 08:53:12 -68.3 Dark Up 59.1 251.3 Up 08:38:12 - 09:08:12 3594
Hawthorne 08:53:07 -68.3 Dark Up 58.4 253.1 Up 08:38:07 - 09:08:07 3582
Tonopah 08:53:02 -68.1 Dark Up 57.5 255.1 Up 08:38:02 - 09:08:02 3573
Lee Vining 08:53:08 -68.9 Dark Up 59.0 253.5 Up 08:38:08 - 09:08:08 3513
Bishop 08:53:05 -69.2 Dark Up 58.6 255.1 Up 08:38:05 - 09:08:05 3472
Beatty 08:52:58 -68.8 Dark Up 57.4 257.3 Up 08:37:58 - 09:07:58 3470
Indian Springs 08:52:54 -68.5 Dark Up 56.7 258.7 Up 08:37:54 - 09:07:54 3468
Henderson 08:52:52 -68.5 Dark Up 56.2 260.1 Up 08:37:52 - 09:07:52 3435
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 3396
Searchlight/Boulder City 08:52:50 -68.9 Dark Up 56.3 261.0 Up 08:37:50 - 09:07:50 3380
Kingman/Dolan Springs 08:52:47 -68.6 Dark Up 55.6 262.0 Up 08:37:47 - 09:07:47 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
George/Scottsdale 08:52:38 -68.2 Dark Up 54.0 265.6 Up 08:37:38 - 09:07:38 3297
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 08:52:52 -71.2 Dark Up 58.0 262.3 Up 08:37:52 - 09:07:52 3154
Wildwood 08:52:59 -71.9 Dark Up 59.5 260.3 Up 08:37:59 - 09:07:59 3137
Calipatria 08:52:47 -70.9 Dark Up 57.1 264.0 Up 08:37:47 - 09:07:47 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 2020/03/22 20:50:43 UT

Marc W. Buie, Southwest Research Institute

RECON