RECON: TNO occultation with 523624

Event between (523624) 08CT190 and star GA1260:03562964 with event index number of 1136462

Geocentric closest approach at 2021/12/26 10:05:19 UTC

J2000 position of star is 12:22:58.5 +37:08:44
Equinox of date position of star is 12:23:58.4 +37:02:02
Stellar brightness G=12.0, use SENSEUP=16
Star is 32 degrees from the moon. Moon is 57% illuminated.
TNO apparent brightness V=25.6

[RECON map]
TNO is 35.2 AU from the Sun and 35.0 AU from the Earth.
The TNO is moving 18.8 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 108 seconds.
The 1-sigma cross-track error in the shadow position is 3962 km.
The sky-plane scale is 25386.1 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=416.9 km assuming a 5% albedo -- 3.2 sec chord
Diameter=170.2 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 523624, (2021/12/26 10:05UT)
Object            RA         Dec     mag  sep  mel
Arcturus       14:16:40.0 +19:04:11  0.0 30.45  37
Phad           11:54:58.6 +53:34:21  2.4 17.30  48
6 CVn          12:26:55.7 +38:53:49  5.0  1.96  34
PPM 076426     12:22:09.5 +37:54:07  8.3  0.96  33
PPM 076472     12:26:11.7 +37:05:58  9.6  0.43  32
523624         12:24:03.9 +37:01:26 12.0        32
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 5.4 km RECON observability=1.0 and success probability=5.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
CPSLO 10:05:09 -61.0 Dark Up 42.4 69.2 Up 09:55:41 - 10:14:37 4688
Wildwood 10:05:00 -59.7 Dark Up 43.5 68.7 Up 09:55:32 - 10:14:28 4591
Quincy 10:05:36 -59.6 Dark Up 43.8 73.2 Up 09:56:08 - 10:15:04 4583
Greenville 10:05:36 -59.5 Dark Up 43.8 73.4 Up 09:56:08 - 10:15:04 4577
Fall River/Burney 10:05:42 -59.4 Dark Up 43.8 74.1 Up 09:56:14 - 10:15:10 4573
Gimple 10:05:37 -59.4 Dark Up 43.9 73.4 Up 09:56:09 - 10:15:05 4573
Portola 10:05:34 -59.3 Dark Up 44.1 73.3 Up 09:56:06 - 10:15:02 4561
Klamath Falls 10:05:49 -59.1 Dark Up 43.8 75.0 Up 09:56:21 - 10:15:17 4555
Susanville 10:05:38 -59.2 Dark Up 44.1 73.8 Up 09:56:10 - 10:15:06 4553
Gardnerville 10:05:28 -59.1 Dark Up 44.3 72.8 Up 09:56:00 - 10:14:56 4545
Carson City 10:05:29 -59.0 Dark Up 44.4 73.0 Up 09:56:01 - 10:14:57 4541
Lee Vining 10:05:21 -59.0 Dark Up 44.5 72.1 Up 09:55:53 - 10:14:49 4535
Reno 10:05:31 -58.9 Dark Up 44.5 73.3 Up 09:56:03 - 10:14:59 4532
Yerington 10:05:28 -58.7 Dark Up 44.8 73.1 Up 09:56:00 - 10:14:56 4510
Bishop 10:05:17 -58.7 Dark Up 44.8 71.8 Up 09:55:49 - 10:14:45 4507
Cedarville 10:05:43 -58.3 Dark Up 44.8 75.1 Up 09:56:15 - 10:15:11 4493
Hawthorne 10:05:24 -58.4 Dark Up 45.0 72.8 Up 09:55:56 - 10:14:52 4492
La Pine/Gilchrist 10:05:57 -58.2 Dark Up 44.4 76.5 Up 09:56:29 - 10:15:25 4492
Lakeview 10:05:47 -58.2 Dark Up 44.8 75.6 Up 09:56:19 - 10:15:15 4482
Oregon Observatory 10:05:57 -58.0 Dark Up 44.5 76.7 Up 09:56:29 - 10:15:25 4481
Idyllwild 10:04:55 -58.2 Dark Up 44.8 68.9 Up 09:55:27 - 10:14:23 4480
North Lake 10:05:54 -58.0 Dark Up 44.7 76.4 Up 09:56:26 - 10:15:22 4476
Paisley 10:05:50 -58.1 Dark Up 44.8 76.0 Up 09:56:22 - 10:15:18 4475
Sisters 10:06:00 -57.9 Dark Up 44.5 77.1 Up 09:56:32 - 10:15:28 4473
Bend 10:05:58 -57.9 Dark Up 44.6 77.0 Up 09:56:30 - 10:15:26 4469
Redmond 10:05:59 -57.7 Dark Up 44.8 77.3 Up 09:56:31 - 10:15:27 4454
Tonopah 10:05:19 -57.5 Dark Up 45.9 72.9 Up 09:55:51 - 10:14:47 4420
Beatty 10:05:12 -57.5 Dark Up 45.9 71.9 Up 09:55:44 - 10:14:40 4419
Maupin 10:06:04 -57.1 Dark Up 45.1 78.2 Up 09:56:36 - 10:15:32 4416
Calipatria 10:04:49 -57.4 Dark Up 45.5 68.6 Up 09:55:21 - 10:14:17 4413
The Dalles 10:06:07 -57.0 Dark Up 45.1 78.6 Up 09:56:39 - 10:15:35 4405
Victoria 10:06:26 -56.5 Dark Up 44.2 80.1 Up 09:56:58 - 10:15:54 4394
Goldendale 10:06:08 -56.6 Dark Up 45.4 79.0 Up 09:56:40 - 10:15:36 4379
Yuma 10:04:46 -56.7 Dark Up 46.1 68.4 Up 09:55:18 - 10:14:14 4361
Indian Springs 10:05:11 -56.8 Dark Up 46.6 72.0 Up 09:55:43 - 10:14:39 4360
Blythe 10:04:51 -56.5 Dark Up 46.4 69.3 Up 09:55:23 - 10:14:19 4344
Yakima 10:06:11 -56.1 Dark Up 45.7 79.9 Up 09:56:43 - 10:15:39 4337
Toppenish/White Swan 10:06:10 -56.1 Dark Up 45.8 79.8 Up 09:56:42 - 10:15:38 4337
Searchlight/Boulder City 10:05:02 -56.5 Dark Up 46.8 71.1 Up 09:55:34 - 10:14:30 4333
Henderson 10:05:05 -56.4 Dark Up 47.0 71.7 Up 09:55:37 - 10:14:33 4326
Ellensburg 10:06:12 -55.8 Dark Up 45.8 80.3 Up 09:56:44 - 10:15:40 4321
Mohave Valley 10:04:58 -56.3 Dark Up 46.9 70.6 Up 09:55:30 - 10:14:26 4320
Laughlin/Bullhead City 10:04:59 -56.2 Dark Up 47.0 70.9 Up 09:55:31 - 10:14:27 4316
Parker 10:04:54 -56.2 Dark Up 46.9 69.9 Up 09:55:26 - 10:14:22 4315
Lake Havasu City 10:04:55 -56.2 Dark Up 47.0 70.3 Up 09:55:27 - 10:14:23 4312
Wenatchee 10:06:16 -55.5 Dark Up 46.0 80.9 Up 09:56:48 - 10:15:44 4294
Kingman/Dolan Springs 10:04:59 -55.8 Dark Up 47.4 71.1 Up 09:55:31 - 10:14:27 4283
Entiat 10:06:17 -55.3 Dark Up 46.1 81.2 Up 09:56:49 - 10:15:45 4279
Pasco 10:06:07 -55.4 Dark Up 46.6 80.4 Up 09:56:39 - 10:15:35 4277
PNWRO 10:06:06 -55.4 Dark Up 46.7 80.3 Up 09:56:38 - 10:15:34 4275
Manson/Chelan 10:06:17 -55.1 Dark Up 46.2 81.5 Up 09:56:49 - 10:15:45 4267
Patrick 10:05:01 -55.6 Dark Up 47.6 71.3 Up 09:55:33 - 10:14:29 4266
Brewster 10:06:18 -54.8 Dark Up 46.5 82.0 Up 09:56:50 - 10:15:46 4241
DCO 10:04:57 -55.1 Dark Up 48.1 71.2 Up 09:55:29 - 10:14:25 4225
Okanogan 10:06:20 -54.5 Dark Up 46.6 82.4 Up 09:56:52 - 10:15:48 4220
Tonasket 10:06:21 -54.2 Dark Up 46.8 82.8 Up 09:56:53 - 10:15:49 4200
Oliver 10:06:24 -54.0 Dark Up 46.8 83.3 Up 09:56:56 - 10:15:52 4187
Anarchist Mountain Observatory 10:06:23 -54.0 Dark Up 46.9 83.2 Up 09:56:55 - 10:15:51 4184
Peachland 10:06:43 -53.8 Dark Up 46.8 83.8 Up 09:57:15 - 10:16:11 4184
Summerland 10:06:26 -53.9 Dark Up 46.8 83.7 Up 09:56:58 - 10:15:54 4175
Penticton 10:06:26 -53.8 Dark Up 46.8 83.7 Up 09:56:58 - 10:15:54 4172
Kelowna 10:06:43 -53.6 Dark Up 47.0 84.1 Up 09:57:15 - 10:16:11 4165
George/Scottsdale 10:04:50 -54.3 Dark Up 48.6 70.1 Up 09:55:22 - 10:14:18 4158
Clarence Fulton 10:06:43 -53.3 Dark Up 47.1 84.6 Up 09:57:15 - 10:16:11 4139
SwRI 10:05:17 -48.1 Dark Up 55.4 80.1 Up 09:55:49 - 10:14:45 3607
Niwot 10:05:20 -48.0 Dark Up 55.5 80.3 Up 09:55:52 - 10:14:48 3599

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 523624, (2021/12/26 10:05UT)
Object            RA         Dec     mag  sep  mel
Arcturus       14:15:38.1 +19:10:16  0.0 30.45  37
Phad           11:53:50.1 +53:41:41  2.4 17.30  48
6 CVn          12:25:50.8 +39:01:06  5.0  1.96  34
PPM 076426     12:21:04.1 +38:01:26  8.3  0.96  33
PPM 076472     12:25:06.5 +37:13:16  9.6  0.43  32
523624         12:22:58.5 +37:08:44 12.0        32
Positions are for J2000

Event circumstances last updated at 2020/02/26 22:32:03 UT

Marc W. Buie, Southwest Research Institute

RECON