RECON: TNO occultation with 523700

Event between (523700) 14GM54 and star GA1080:14220771 with event index number of 1232981

Geocentric closest approach at 2022/07/14 08:10:20 UTC

J2000 position of star is 19:53:49.0 +19:46:24
Equinox of date position of star is 19:54:40.5 +19:49:30
Stellar brightness G=15.6, use SENSEUP=128
Star is 45 degrees from the moon. Moon is 99% illuminated.
TNO apparent brightness V=21.6

[RECON map]
TNO is 27.7 AU from the Sun and 27.0 AU from the Earth.
The TNO is moving 23.8 km/sec on the sky relative to the star, or, 4.4 arcsec/hr.
The 1-sigma error in the time of the event is 127 seconds.
The 1-sigma cross-track error in the shadow position is 1939 km.
The sky-plane scale is 19566.2 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 9.6 sec chord
Diameter=93.5 km assuming a 30% albedo -- 3.9 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 523700, (2022/07/14 08:10UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:42.1 +38:48:20  0.0 25.23  67
Tarazed        19:47:19.8 +10:40:11  2.7  9.34  36
9 Sge          19:53:22.0 +18:43:52  6.1  1.15  44
PPM 109951     19:54:23.8 +20:23:14  7.5  0.56  45
PPM 109977     19:54:59.5 +20:04:11  8.7  0.24  45
PPM 137166     19:54:30.6 +19:41:05 10.3  0.16  45
523700         19:54:48.8 +19:50:00 15.6        45
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 21.8 km RECON observability=1.0 and success probability=12.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 08:09:58 -18.4 Dark Up 59.8 174.1 Up 07:58:55 - 08:21:02 4283
Summerland 08:10:00 -18.7 Dark Up 60.0 173.5 Up 07:58:56 - 08:21:03 4260
Penticton 08:10:00 -18.8 Dark Up 60.1 173.7 Up 07:58:56 - 08:21:03 4252
Okanagan Falls 08:10:00 -19.0 Dark Up 60.3 173.6 Up 07:58:56 - 08:21:03 4235
Oliver 08:10:00 -19.1 Dark Up 60.5 173.6 Up 07:58:56 - 08:21:03 4220
Anarchist Mountain Observatory 08:10:00 -19.3 Dark Up 60.7 174.0 Up 07:58:56 - 08:21:03 4200
Oroville 08:10:00 -19.4 Dark Up 60.7 173.8 Up 07:58:56 - 08:21:03 4194
Tonasket 08:10:00 -19.6 Dark Up 61.0 173.8 Up 07:58:57 - 08:21:04 4173
Okanogan 08:10:01 -20.0 Dark Up 61.3 173.4 Up 07:58:58 - 08:21:05 4144
Brewster 08:10:02 -20.2 Dark Up 61.5 173.0 Up 07:58:59 - 08:21:06 4122
Manson/Chelan 08:10:04 -20.5 Dark Up 61.7 172.2 Up 07:59:00 - 08:21:07 4110
Entiat 08:10:05 -20.7 Dark Up 61.9 172.0 Up 07:59:01 - 08:21:08 4090
Wenatchee 08:10:04 -20.9 Dark Up 62.2 171.8 Up 07:59:01 - 08:21:08 4068
Ellensburg 08:10:06 -21.3 Dark Up 62.6 171.2 Up 07:59:02 - 08:21:09 4033
Yakima 08:10:06 -21.8 Dark Up 63.0 171.0 Up 07:59:03 - 08:21:10 3995
Toppenish/White Swan 08:10:06 -22.0 Dark Up 63.2 171.3 Up 07:59:02 - 08:21:09 3971
Pasco 08:10:02 -22.1 Dark Up 63.4 173.9 Up 07:58:59 - 08:21:06 3935
Goldendale 08:10:08 -22.5 Dark Up 63.7 170.3 Up 07:59:04 - 08:21:11 3927
The Dalles 08:10:10 -22.7 Dark Up 63.9 169.4 Up 07:59:06 - 08:21:13 3913
George/Umatilla 08:10:03 -22.4 Dark Up 63.7 173.4 Up 07:59:00 - 08:21:07 3907
PNWRO 08:10:02 -22.3 Dark Up 63.7 174.4 Up 07:58:58 - 08:21:05 3907
Maupin 08:10:10 -23.2 Dark Up 64.3 169.5 Up 07:59:06 - 08:21:13 3871
Madras/Culver 08:10:11 -23.7 Dark Up 64.8 169.2 Up 07:59:07 - 08:21:14 3819
Sisters 08:10:12 -24.0 Dark Up 65.1 168.1 Up 07:59:09 - 08:21:16 3796
Redmond 08:10:12 -24.1 Dark Up 65.2 169.0 Up 07:59:08 - 08:21:15 3786
Bend 08:10:11 -24.3 Dark Up 65.4 168.6 Up 07:59:08 - 08:21:15 3768
Oregon Observatory 08:10:12 -24.5 Dark Up 65.5 168.2 Up 07:59:08 - 08:21:15 3754
La Pine/Gilchrist 08:10:13 -24.7 Dark Up 65.7 168.0 Up 07:59:10 - 08:21:17 3735
North Lake 08:10:11 -25.1 Dark Up 66.2 169.2 Up 07:59:08 - 08:21:15 3680
Chiloquin 08:10:16 -25.8 Dark Up 66.7 166.6 Up 07:59:12 - 08:21:19 3634
Paisley 08:10:11 -25.6 Dark Up 66.8 169.8 Up 07:59:07 - 08:21:14 3619
Klamath Falls 08:10:15 -26.1 Dark Up 67.1 166.6 Up 07:59:12 - 08:21:19 3599
Tulelake 08:10:15 -26.4 Dark Up 67.4 167.2 Up 07:59:11 - 08:21:18 3566
Lakeview 08:10:10 -26.2 Dark Up 67.3 170.0 Up 07:59:07 - 08:21:14 3565
Cedarville 08:10:11 -26.8 Dark Up 68.0 170.2 Up 07:59:07 - 08:21:14 3496
Fall River/Burney 08:10:16 -27.3 Dark Up 68.3 166.9 Up 07:59:12 - 08:21:19 3475
Susanville 08:10:14 -27.9 Dark Up 69.0 168.4 Up 07:59:10 - 08:21:17 3396
Greenville 08:10:16 -28.2 Dark Up 69.2 167.5 Up 07:59:12 - 08:21:19 3375
Gimple 08:10:15 -28.2 Dark Up 69.3 167.8 Up 07:59:11 - 08:21:18 3373
Quincy 08:10:16 -28.4 Dark Up 69.4 167.4 Up 07:59:12 - 08:21:19 3354
Portola 08:10:14 -28.5 Dark Up 69.6 168.6 Up 07:59:11 - 08:21:18 3331
Reno 08:10:12 -28.8 Dark Up 70.0 170.2 Up 07:59:08 - 08:21:15 3290
Carson City 08:10:13 -29.1 Dark Up 70.4 170.1 Up 07:59:09 - 08:21:16 3254
Gardnerville 08:10:13 -29.4 Dark Up 70.6 170.1 Up 07:59:10 - 08:21:17 3228
Yerington 08:10:11 -29.3 Dark Up 70.6 171.8 Up 07:59:07 - 08:21:14 3220
Hawthorne 08:10:09 -29.8 Dark Up 71.1 173.1 Up 07:59:06 - 08:21:13 3162
Lee Vining 08:10:11 -30.4 Dark Up 71.6 171.5 Up 07:59:08 - 08:21:15 3115
Tonopah 08:10:05 -30.2 Dark Up 71.7 177.1 Up 07:59:01 - 08:21:08 3084
Niwot 08:09:21 -26.5 Dark Up 67.6 207.9 Up 07:58:18 - 08:20:25 3082
SwRI 08:09:22 -26.6 Dark Up 67.7 207.8 Up 07:58:18 - 08:20:25 3072
Bishop 08:10:10 -30.9 Dark Up 72.3 173.4 Up 07:59:06 - 08:21:13 3038
Beatty 08:10:04 -31.3 Dark Up 72.9 178.4 Up 07:59:01 - 08:21:08 2955
Lone Pine 08:10:10 -31.7 Dark Up 73.1 174.2 Up 07:59:06 - 08:21:13 2953
Indian Springs 08:10:00 -31.5 Dark Up 73.2 181.8 Up 07:58:57 - 08:21:04 2899
CPSLO 08:10:20 -33.0 Dark Up 74.0 165.0 Up 07:59:17 - 08:21:24 2878
Henderson 08:09:59 -32.0 Dark Up 73.7 184.2 Up 07:58:55 - 08:21:02 2829
Searchlight/Boulder City 08:09:59 -32.6 Dark Up 74.3 184.5 Up 07:58:56 - 08:21:03 2768
Patrick 08:09:55 -32.5 Dark Up 74.2 188.1 Up 07:58:52 - 08:20:59 2741
Laughlin/Bullhead City 08:09:58 -32.8 Dark Up 74.5 185.8 Up 07:58:55 - 08:21:02 2730
Kingman/Dolan Springs 08:09:56 -32.8 Dark Up 74.5 187.6 Up 07:58:53 - 08:21:00 2722
Wildwood 08:10:14 -34.2 Dark Up 75.5 171.3 Up 07:59:11 - 08:21:18 2705
Mohave Valley 08:09:59 -33.1 Dark Up 74.8 186.0 Up 07:58:55 - 08:21:02 2702
DCO 08:09:53 -32.7 Dark Up 74.4 190.7 Up 07:58:50 - 08:20:57 2695
Lake Havasu City 08:09:58 -33.5 Dark Up 75.2 187.0 Up 07:58:55 - 08:21:02 2655
Idyllwild 08:10:07 -34.5 Dark Up 76.0 178.2 Up 07:59:04 - 08:21:11 2626
Parker 08:09:58 -33.8 Dark Up 75.5 187.3 Up 07:58:55 - 08:21:02 2617
Blythe 08:10:00 -34.4 Dark Up 76.1 186.4 Up 07:58:56 - 08:21:03 2568
Calipatria 08:10:04 -35.0 Dark Up 76.6 182.9 Up 07:59:01 - 08:21:08 2536
Yuma 08:10:01 -35.3 Dark Up 77.0 186.7 Up 07:58:58 - 08:21:05 2472

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 523700, (2022/07/14 08:10UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 25.23  67
Tarazed        19:46:15.6 +10:36:48  2.7  9.34  36
9 Sge          19:52:21.7 +18:40:18  6.1  1.15  44
PPM 109951     19:53:24.4 +20:19:39  7.5  0.56  45
PPM 109977     19:53:59.8 +20:00:34  8.7  0.24  45
PPM 137166     19:53:30.8 +19:37:29 10.3  0.16  45
523700         19:53:49.0 +19:46:24 15.6        45
Positions are for J2000

Event circumstances last updated at 2019/06/08 03:50:47 UT

Marc W. Buie, Southwest Research Institute

RECON