RECON: TNO occultation with 02GY32

Event between 02GY32 and star GA0680:06961278 with event index number of 1070884

Geocentric closest approach at 2021/05/20 08:24:22 UTC

J2000 position of star is 16:21:34.5 -20:49:54
Equinox of date position of star is 16:22:50.1 -20:52:51
Stellar brightness G=15.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 91 degrees from the moon. Moon is 56% illuminated.
TNO apparent brightness V=23.0

[RECON map]
TNO is 36.8 AU from the Sun and 35.8 AU from the Earth.
The TNO is moving 24.0 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 247 seconds.
The 1-sigma cross-track error in the shadow position is 2566 km.
The sky-plane scale is 25952.5 km/arcsec.

The TNO has an absolute magnitude Hv=7.4
Diameter=202.3 km assuming a 5% albedo -- 8.4 sec chord
Diameter=82.6 km assuming a 30% albedo -- 3.4 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 02GY32, (2021/05/20 08:24UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:43.3 -26:28:39  0.9  5.88  94
8Bet1Sco       16:06:41.0 -19:51:44  2.6  3.92  87
PPM 265395     16:20:23.1 -20:16:07  6.3  0.84  90
PPM 265409     16:21:11.0 -20:49:57  8.4  0.39  90
PPM 265453     16:23:08.9 -20:34:25 10.0  0.32  91
PPM 265441     16:22:29.0 -20:44:28 10.1  0.16  91
02GY32         16:22:50.1 -20:52:51 15.6        91
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 3.6 sigma about the mid-time.
The median site spacing is 13.4 km RECON observability=0.9 and success probability=7.5%
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 08:25:07 -19.4 Dark Up 18.9 179.8 Really Low 08:10:07 - 08:40:07 -1359
Kelowna 08:25:08 -19.8 Dark Up 19.3 179.6 Really Low 08:10:08 - 08:40:08 -1375
Peachland 08:25:08 -19.9 Dark Up 19.4 179.4 Really Low 08:10:08 - 08:40:08 -1382
Summerland 08:25:08 -20.0 Dark Up 19.6 179.4 Really Low 08:10:08 - 08:40:08 -1387
Penticton 08:25:08 -20.1 Dark Up 19.6 179.6 Really Low 08:10:08 - 08:40:08 -1388
Oliver 08:25:08 -20.4 Dark Up 20.0 179.6 Really Low 08:10:08 - 08:40:08 -1401
Anarchist Mountain Observatory 08:25:07 -20.6 Dark Up 20.2 179.7 Low 08:10:07 - 08:40:07 -1404
Tonasket 08:25:08 -20.9 Dark Up 20.5 179.7 Low 08:10:08 - 08:40:08 -1418
Okanogan 08:25:08 -21.2 Dark Up 20.8 179.5 Low 08:10:08 - 08:40:08 -1433
Brewster 08:25:08 -21.5 Dark Up 21.1 179.3 Low 08:10:08 - 08:40:08 -1446
Manson/Chelan 08:25:10 -21.8 Dark Up 21.3 179.0 Low 08:10:10 - 08:40:10 -1459
Victoria 08:25:19 -21.3 Dark Up 20.5 175.7 Low 08:10:19 - 08:40:19 -1479
Wenatchee 08:25:09 -22.3 Dark Up 21.7 178.8 Low 08:10:09 - 08:40:09 -1481
Ellensburg 08:25:10 -22.7 Dark Up 22.2 178.6 Low 08:10:10 - 08:40:10 -1500
Pasco 08:25:06 -23.3 Dark Up 22.9 180.0 Low 08:10:06 - 08:40:06 -1513
Yakima 08:25:10 -23.1 Dark Up 22.6 178.5 Low 08:10:10 - 08:40:10 -1518
PNWRO 08:25:05 -23.5 Dark Up 23.2 180.2 Low 08:10:05 - 08:40:05 -1520
Toppenish/White Swan 08:25:10 -23.3 Dark Up 22.8 178.7 Low 08:10:10 - 08:40:10 -1525
Goldendale 08:25:11 -23.9 Dark Up 23.3 178.3 Low 08:10:11 - 08:40:11 -1555
The Dalles 08:25:12 -24.1 Dark Up 23.5 177.9 Low 08:10:12 - 08:40:12 -1570
Maupin 08:25:12 -24.5 Dark Up 24.0 178.0 Low 08:10:12 - 08:40:12 -1587
Redmond 08:25:12 -25.4 Dark Up 24.9 177.9 Low 08:10:12 - 08:40:12 -1629
Sisters 08:25:13 -25.4 Dark Up 24.8 177.5 Low 08:10:13 - 08:40:13 -1634
Bend 08:25:12 -25.7 Dark Up 25.1 177.7 Low 08:10:12 - 08:40:12 -1641
Dunrhomin 08:24:16 -26.4 Dark Up 27.6 194.5 Low 08:09:16 - 08:39:16 -1646
Oregon Observatory 08:25:13 -25.8 Dark Up 25.2 177.6 Low 08:10:13 - 08:40:13 -1651
La Pine/Gilchrist 08:25:13 -26.1 Dark Up 25.5 177.5 Low 08:10:13 - 08:40:13 -1662
North Lake 08:25:11 -26.4 Dark Up 25.9 178.1 Low 08:10:11 - 08:40:11 -1674
Paisley 08:25:09 -27.0 Dark Up 26.5 178.5 Low 08:10:09 - 08:40:09 -1695
Lakeview 08:25:09 -27.4 Dark Up 27.0 178.7 Low 08:10:09 - 08:40:09 -1717
Chiloquin 08:25:14 -27.2 Dark Up 26.6 177.1 Low 08:10:14 - 08:40:14 -1721
Klamath Falls 08:25:13 -27.5 Dark Up 26.9 177.2 Low 08:10:13 - 08:40:13 -1737
Cedarville 08:25:08 -28.1 Dark Up 27.6 178.9 Low 08:10:08 - 08:40:08 -1748
Fall River/Burney 08:25:12 -28.7 Dark Up 28.1 177.6 Low 08:10:12 - 08:40:12 -1792
Susanville 08:25:09 -29.2 Dark Up 28.7 178.4 Low 08:10:09 - 08:40:09 -1813
Gimple 08:25:10 -29.5 Dark Up 29.0 178.1 Low 08:10:10 - 08:40:10 -1831
Greenville 08:25:10 -29.5 Dark Up 29.0 178.0 Low 08:10:10 - 08:40:10 -1833
Portola 08:25:08 -29.8 Dark Up 29.3 178.5 Low 08:10:08 - 08:40:08 -1842
Quincy 08:25:10 -29.7 Dark Up 29.2 178.0 Low 08:10:10 - 08:40:10 -1843
Reno 08:25:06 -30.0 Dark Up 29.6 179.2 Low 08:10:06 - 08:40:06 -1847
Carson City 08:25:06 -30.4 Dark Up 30.0 179.2 Low 08:10:06 - 08:40:06 -1866
Yerington 08:25:04 -30.5 Dark Up 30.2 179.9 Up 08:10:04 - 08:40:04 -1867
Gardnerville 08:25:06 -30.6 Dark Up 30.2 179.3 Up 08:10:06 - 08:40:06 -1879
Hawthorne 08:25:02 -30.9 Dark Up 30.6 180.5 Up 08:10:02 - 08:40:02 -1885
Tonopah 08:24:56 -31.2 Dark Up 31.1 182.0 Up 08:09:56 - 08:39:56 -1891
Lee Vining 08:25:03 -31.5 Dark Up 31.2 180.0 Up 08:10:03 - 08:40:03 -1924
Bishop 08:25:00 -32.0 Dark Up 31.8 180.8 Up 08:10:00 - 08:40:00 -1948
Beatty 08:24:54 -32.2 Dark Up 32.2 182.5 Up 08:09:54 - 08:39:54 -1951
Indian Springs 08:24:50 -32.4 Dark Up 32.5 183.7 Up 08:09:50 - 08:39:50 -1955
Henderson 08:24:47 -32.8 Dark Up 33.0 184.5 Up 08:09:47 - 08:39:47 -1978
Patrick 08:24:43 -33.1 Dark Up 33.5 185.8 Up 08:09:43 - 08:39:43 -2000
Kingman/Dolan Springs 08:24:44 -33.4 Dark Up 33.8 185.6 Up 08:09:44 - 08:39:44 -2016
Laughlin/Bullhead City 08:24:45 -33.5 Dark Up 33.8 185.0 Up 08:09:45 - 08:39:45 -2025
Mohave Valley 08:24:45 -33.8 Dark Up 34.1 185.0 Up 08:09:45 - 08:39:45 -2041
Lake Havasu City 08:24:44 -34.1 Dark Up 34.5 185.3 Up 08:09:44 - 08:39:44 -2062
George/Scottsdale 08:24:34 -34.3 Dark Up 35.0 188.1 Up 08:09:34 - 08:39:34 -2079
Parker 08:24:44 -34.5 Dark Up 34.8 185.4 Up 08:09:44 - 08:39:44 -2084
CPSLO 08:25:08 -34.3 Dark Up 33.8 178.3 Up 08:10:08 - 08:40:08 -2106
Blythe 08:24:44 -35.0 Dark Up 35.4 185.1 Up 08:09:44 - 08:39:44 -2120
Idyllwild 08:24:52 -35.3 Dark Up 35.4 182.7 Up 08:09:52 - 08:39:52 -2141
Wildwood 08:24:59 -35.2 Dark Up 35.1 180.5 Up 08:09:59 - 08:39:59 -2148
Calipatria 08:24:48 -35.7 Dark Up 35.9 184.0 Up 08:09:48 - 08:39:48 -2164
Yuma 08:24:44 -35.9 Dark Up 36.3 185.1 Up 08:09:44 - 08:39:44 -2180

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 02GY32, (2021/05/20 08:24UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  5.88  94
8Bet1Sco       16:05:26.2 -19:48:20  2.6  3.92  87
PPM 265395     16:19:07.8 -20:13:06  6.3  0.84  90
PPM 265409     16:19:55.4 -20:46:57  8.4  0.39  90
PPM 265453     16:21:53.4 -20:31:28 10.0  0.32  91
PPM 265441     16:21:13.5 -20:41:30 10.1  0.16  91
02GY32         16:21:34.5 -20:49:54 15.6        91
Positions are for J2000

Event circumstances last updated at 2021/05/17 01:01:49 UT

Marc W. Buie, Southwest Research Institute

RECON