RECON: TNO occultation with 523703

Event between (523703) 14HX199 and star GA0740:07047434 with event index number of 1678041

Geocentric closest approach at 2027/04/21 10:02:05 UTC

J2000 position of star is 17:11:28.4 -14:34:37
Equinox of date position of star is 17:12:36.8 -14:36:00
Stellar brightness G=15.3, use SENSEUP=128
Star is 43 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=22.1

[RECON map]
TNO is 30.8 AU from the Sun and 30.1 AU from the Earth.
The TNO is moving 14.0 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 678 seconds.
The 1-sigma cross-track error in the shadow position is 3772 km.
The sky-plane scale is 21818.6 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 16.3 sec chord
Diameter=93.5 km assuming a 30% albedo -- 6.7 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 523703, (2027/04/21 10:02UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:05.2 -26:29:24  0.9 15.40  33
35Eta Oph      17:11:56.7 -15:45:24  2.6  1.18  43
PPM 232829     17:16:53.6 -14:36:47  5.9  0.93  44
PPM 232740     17:13:31.9 -14:39:06  7.6  0.13  43
523703         17:13:01.7 -14:36:30 15.3        43
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 1.3 sigma about the mid-time.
The median site spacing is 14.5 km RECON observability=1.0 and success probability=4.9%
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 10:04:54 -21.8 Dark Up 23.5 162.3 Low 09:49:54 - 10:19:54 5582
Kelowna 10:04:54 -22.2 Dark Up 23.9 162.1 Low 09:49:54 - 10:19:54 5559
Summerland 10:04:58 -22.5 Dark Up 24.1 161.9 Low 09:49:58 - 10:19:58 5541
Penticton 10:04:57 -22.5 Dark Up 24.2 162.0 Low 09:49:57 - 10:19:57 5539
Oliver 10:04:56 -22.8 Dark Up 24.5 162.0 Low 09:49:56 - 10:19:56 5520
Anarchist Mountain Observatory 10:04:56 -22.9 Dark Up 24.7 162.1 Low 09:49:56 - 10:19:56 5516
Tonasket 10:04:57 -23.1 Dark Up 25.0 162.0 Low 09:49:57 - 10:19:57 5497
Okanogan 10:04:57 -23.5 Dark Up 25.3 161.8 Low 09:49:57 - 10:19:57 5475
Brewster 10:04:58 -23.8 Dark Up 25.5 161.6 Low 09:49:58 - 10:19:58 5456
Manson/Chelan 10:05:00 -24.1 Dark Up 25.6 161.2 Low 09:50:00 - 10:20:00 5436
Entiat 10:05:02 -24.3 Dark Up 25.8 161.1 Low 09:50:02 - 10:20:02 5422
Wenatchee 10:05:03 -24.5 Dark Up 26.0 160.9 Low 09:50:03 - 10:20:03 5406
Victoria 10:05:16 -24.7 Dark Up 24.3 157.9 Low 09:50:16 - 10:20:16 5404
Ellensburg 10:05:03 -25.0 Dark Up 26.4 160.6 Low 09:50:03 - 10:20:03 5377
Pasco 10:04:57 -25.0 Dark Up 27.4 162.0 Low 09:49:57 - 10:19:57 5364
PNWRO 10:04:56 -25.1 Dark Up 27.7 162.2 Low 09:49:56 - 10:19:56 5354
Yakima 10:05:05 -25.3 Dark Up 26.7 160.5 Low 09:50:05 - 10:20:05 5353
Toppenish/White Swan 10:05:04 -25.4 Dark Up 27.0 160.7 Low 09:50:04 - 10:20:04 5344
Goldendale 10:05:05 -26.0 Dark Up 27.4 160.1 Low 09:50:05 - 10:20:05 5302
The Dalles 10:05:07 -26.4 Dark Up 27.5 159.7 Low 09:50:07 - 10:20:07 5280
Niwot 10:03:42 -22.8 Dark Up 35.3 176.6 Up 09:48:42 - 10:18:42 5275
SwRI 10:03:42 -22.9 Dark Up 35.4 176.5 Up 09:48:42 - 10:18:42 5266
Maupin 10:05:08 -26.7 Dark Up 28.0 159.8 Low 09:50:08 - 10:20:08 5257
Redmond 10:05:09 -27.4 Dark Up 28.8 159.5 Low 09:50:09 - 10:20:09 5200
Sisters 10:05:12 -27.6 Dark Up 28.7 159.1 Low 09:50:12 - 10:20:12 5192
Bend 10:05:11 -27.7 Dark Up 28.9 159.3 Low 09:50:11 - 10:20:11 5183
Oregon Observatory 10:05:11 -27.9 Dark Up 29.1 159.1 Low 09:50:11 - 10:20:11 5170
La Pine/Gilchrist 10:05:11 -28.1 Dark Up 29.3 159.0 Low 09:50:11 - 10:20:11 5155
North Lake 10:05:09 -28.2 Dark Up 29.8 159.6 Low 09:50:09 - 10:20:09 5141
Paisley 10:05:08 -28.5 Dark Up 30.4 159.9 Up 09:50:08 - 10:20:08 5114
Lakeview 10:05:05 -28.8 Dark Up 30.9 159.9 Up 09:50:05 - 10:20:05 5086
Klamath Falls 10:05:13 -29.4 Dark Up 30.5 158.4 Up 09:50:13 - 10:20:13 5055
Cedarville 10:05:06 -29.3 Dark Up 31.6 160.0 Up 09:50:06 - 10:20:06 5046
Fall River/Burney 10:05:13 -30.2 Dark Up 31.7 158.6 Up 09:50:13 - 10:20:13 4985
Susanville 10:05:09 -30.4 Dark Up 32.5 159.2 Up 09:50:09 - 10:20:09 4960
Gimple 10:05:11 -30.7 Dark Up 32.7 159.0 Up 09:50:11 - 10:20:11 4936
Greenville 10:05:10 -30.7 Dark Up 32.7 158.9 Up 09:50:10 - 10:20:10 4934
Portola 10:05:08 -30.8 Dark Up 33.1 159.3 Up 09:50:08 - 10:20:08 4924
Reno 10:05:05 -30.7 Dark Up 33.6 160.0 Up 09:50:05 - 10:20:05 4921
Quincy 10:05:10 -30.9 Dark Up 32.9 158.8 Up 09:50:10 - 10:20:10 4921
Yerington 10:05:01 -30.9 Dark Up 34.3 160.6 Up 09:50:01 - 10:20:01 4898
Carson City 10:05:04 -31.0 Dark Up 33.9 159.9 Up 09:50:04 - 10:20:04 4896
Gardnerville 10:05:05 -31.2 Dark Up 34.1 159.9 Up 09:50:05 - 10:20:05 4881
Tonopah 10:04:50 -30.7 Dark Up 35.6 162.5 Up 09:49:50 - 10:19:50 4879
Hawthorne 10:04:59 -31.0 Dark Up 34.8 161.0 Up 09:49:59 - 10:19:59 4878
Lee Vining 10:05:01 -31.7 Dark Up 35.2 160.4 Up 09:50:01 - 10:20:01 4827
Indian Springs 10:04:42 -31.0 Dark Up 37.4 164.0 Up 09:49:42 - 10:19:42 4809
Beatty 10:04:49 -31.3 Dark Up 36.8 162.8 Up 09:49:49 - 10:19:49 4807
Bishop 10:04:59 -31.8 Dark Up 36.0 161.0 Up 09:49:59 - 10:19:59 4802
Henderson 10:04:38 -31.0 Dark Up 38.0 164.7 Up 09:49:38 - 10:19:38 4787
Patrick 10:04:31 -30.9 Dark Up 38.9 165.8 Up 09:49:31 - 10:19:31 4768
DCO 10:04:28 -30.7 Dark Up 39.3 166.6 Up 09:49:28 - 10:19:28 4762
Kingman/Dolan Springs 10:04:32 -31.1 Dark Up 39.0 165.6 Up 09:49:32 - 10:19:32 4747
Searchlight/Boulder City 10:04:37 -31.4 Dark Up 38.6 164.6 Up 09:49:37 - 10:19:37 4747
Laughlin/Bullhead City 10:04:36 -31.4 Dark Up 39.0 165.0 Up 09:49:36 - 10:19:36 4733
Mohave Valley 10:04:35 -31.6 Dark Up 39.2 164.9 Up 09:49:35 - 10:19:35 4713
George/Scottsdale 10:04:19 -30.9 Dark Up 40.9 168.0 Up 09:49:19 - 10:19:19 4690
Lake Havasu City 10:04:34 -31.8 Dark Up 39.7 165.1 Up 09:49:34 - 10:19:34 4689
Parker 10:04:33 -32.0 Dark Up 40.0 165.1 Up 09:49:33 - 10:19:33 4664
Blythe 10:04:36 -32.6 Dark Up 40.5 164.6 Up 09:49:36 - 10:19:36 4617
CPSLO 10:05:11 -34.5 Dark Up 37.3 157.9 Up 09:50:11 - 10:20:11 4594
Idyllwild 10:04:48 -33.7 Dark Up 39.8 162.1 Up 09:49:48 - 10:19:48 4575
Calipatria 10:04:41 -33.5 Dark Up 40.7 163.4 Up 09:49:41 - 10:19:41 4557
Wildwood 10:05:00 -34.4 Dark Up 39.0 160.0 Up 09:50:00 - 10:20:00 4555
Yuma 10:04:35 -33.3 Dark Up 41.3 164.3 Up 09:49:35 - 10:19:35 4546

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 523703, (2027/04/21 10:02UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 15.40  33
35Eta Oph      17:10:22.7 -15:43:29  2.6  1.18  43
PPM 232829     17:15:20.3 -14:35:03  5.9  0.93  44
PPM 232740     17:11:58.6 -14:37:14  7.6  0.13  43
523703         17:11:28.4 -14:34:37 15.3        43
Positions are for J2000

Event circumstances last updated at 2020/01/06 18:43:32 UT

Marc W. Buie, Southwest Research Institute

RECON