RECON: TNO occultation with 02GW32

Event between 02GW32 and star GA0640:08663283 with event index number of 1070691

Geocentric closest approach at 2021/04/10 11:02:39 UTC

J2000 position of star is 16:49:01.1 -25:05:52
Equinox of date position of star is 16:50:18.4 -25:07:59
Stellar brightness G=15.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 108 degrees from the moon. Moon is 3% illuminated.
TNO apparent brightness V=23.1

[RECON map]
TNO is 37.1 AU from the Sun and 36.5 AU from the Earth.
The TNO is moving 12.6 km/sec on the sky relative to the star, or, 1.7 arcsec/hr.
The 1-sigma error in the time of the event is 1472 seconds.
The 1-sigma cross-track error in the shadow position is 3716 km.
The sky-plane scale is 26494.6 km/arcsec.

The TNO has an absolute magnitude Hv=7.3
Diameter=212.8 km assuming a 5% albedo -- 16.9 sec chord
Diameter=86.9 km assuming a 30% albedo -- 6.9 sec chord
Dynamical classification is 5:4E
 
 
 
 
 
 

Star training set for 02GW32, (2021/04/10 11:03UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:42.9 -26:28:39  0.9  4.61 112
23Tau Sco      16:37:12.6 -28:15:30  2.8  4.28 110
26 Oph         17:01:27.9 -25:01:11  5.8  2.53 106
PPM 266013     16:50:53.3 -25:06:26  7.6  0.13 108
02GW32         16:50:19.2 -25:08:00 15.9       108
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 0.6 sigma about the mid-time.
The median site spacing is 11.1 km RECON observability=0.7 and success probability=3.4%
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 11:03:49 -19.2 Dark Down 14.4 173.7 Really Low 10:48:49 - 11:18:49 3526
Kelowna 11:03:49 -19.5 Dark Down 14.8 173.6 Really Low 10:48:49 - 11:18:49 3514
Peachland 11:03:49 -19.7 Dark Down 14.9 173.3 Really Low 10:48:49 - 11:18:49 3509
Summerland 11:03:49 -19.8 Dark Down 15.0 173.4 Really Low 10:48:49 - 11:18:49 3505
Penticton 11:03:49 -19.8 Dark Down 15.1 173.5 Really Low 10:48:49 - 11:18:49 3503
Oliver 11:03:49 -20.0 Dark Down 15.5 173.5 Really Low 10:48:49 - 11:18:49 3493
Anarchist Mountain Observatory 11:03:49 -20.0 Dark Down 15.6 173.6 Really Low 10:48:49 - 11:18:49 3489
Tonasket 11:03:49 -20.2 Dark Down 15.9 173.6 Really Low 10:48:49 - 11:18:49 3479
Okanogan 11:03:49 -20.5 Dark Down 16.3 173.4 Really Low 10:48:49 - 11:18:49 3467
Brewster 11:03:49 -20.8 Dark Down 16.5 173.2 Really Low 10:48:49 - 11:18:49 3456
Manson/Chelan 11:03:49 -21.1 Dark Down 16.7 172.9 Really Low 10:48:49 - 11:18:49 3447
Victoria 11:04:15 -22.3 Dark Down 15.8 169.9 Really Low 10:49:15 - 11:19:15 3433
Wenatchee 11:03:49 -21.5 Dark Down 17.2 172.7 Really Low 10:48:49 - 11:18:49 3430
Ellensburg 11:03:49 -21.9 Dark Down 17.5 172.5 Really Low 10:48:49 - 11:18:49 3414
Yakima 11:03:49 -22.2 Dark Down 18.0 172.4 Really Low 10:48:49 - 11:18:49 3400
Pasco 11:03:49 -21.7 Dark Down 18.4 173.8 Really Low 10:48:49 - 11:18:49 3398
Toppenish/White Swan 11:03:49 -22.3 Dark Down 18.2 172.6 Really Low 10:48:49 - 11:18:49 3393
PNWRO 11:03:48 -21.7 Dark Down 18.7 174.0 Really Low 10:48:48 - 11:18:48 3391
Goldendale 11:03:49 -22.8 Dark Down 18.7 172.1 Really Low 10:48:49 - 11:18:49 3371
The Dalles 11:03:49 -23.2 Dark Down 18.9 171.8 Really Low 10:48:49 - 11:18:49 3360
Maupin 11:03:49 -23.4 Dark Down 19.3 171.9 Really Low 10:48:49 - 11:18:49 3345
Redmond 11:03:49 -24.0 Dark Down 20.2 171.7 Low 10:48:49 - 11:18:49 3310
Sisters 11:04:08 -24.2 Dark Down 20.1 171.4 Low 10:49:08 - 11:19:08 3299
Bend 11:04:07 -24.2 Dark Down 20.4 171.7 Low 10:49:07 - 11:19:07 3292
Oregon Observatory 11:04:08 -24.4 Dark Down 20.6 171.5 Low 10:49:08 - 11:19:08 3284
La Pine/Gilchrist 11:04:09 -24.6 Dark Down 20.7 171.5 Low 10:49:09 - 11:19:09 3275
North Lake 11:03:49 -24.5 Dark Down 21.2 171.9 Low 10:48:49 - 11:18:49 3271
Paisley 11:03:49 -24.7 Dark Down 21.8 172.3 Low 10:48:49 - 11:18:49 3249
Lakeview 11:03:49 -24.9 Dark Down 22.3 172.4 Low 10:48:49 - 11:18:49 3229
Dunrhomin 11:02:25 -16.6 AT Down 24.3 187.0 Low 10:47:25 - 11:17:25 3229
Klamath Falls 11:04:12 -25.6 Dark Down 22.2 171.1 Low 10:49:12 - 11:19:12 3210
Cedarville 11:03:49 -25.2 Dark Down 23.0 172.6 Low 10:48:49 - 11:18:49 3201
Fall River/Burney 11:04:10 -26.2 Dark Down 23.4 171.4 Low 10:49:10 - 11:19:10 3161
Susanville 11:03:49 -26.2 Dark Down 24.1 172.0 Low 10:48:49 - 11:18:49 3148
Gimple 11:03:49 -26.5 Dark Down 24.3 171.8 Low 10:48:49 - 11:18:49 3134
Greenville 11:04:08 -26.5 Dark Down 24.3 171.8 Low 10:49:08 - 11:19:08 3124
Portola 11:03:49 -26.5 Dark Down 24.7 172.2 Low 10:48:49 - 11:18:49 3121
Quincy 11:04:07 -26.6 Dark Down 24.5 171.8 Low 10:49:07 - 11:19:07 3114
Reno 11:03:49 -26.2 Dark Down 25.0 172.8 Low 10:48:49 - 11:18:49 3112
Carson City 11:03:49 -26.4 Dark Down 25.4 172.8 Low 10:48:49 - 11:18:49 3094
Yerington 11:03:49 -26.2 Dark Down 25.6 173.4 Low 10:48:49 - 11:18:49 3089
Gardnerville 11:03:49 -26.6 Dark Down 25.6 172.8 Low 10:48:49 - 11:18:49 3083
Hawthorne 11:03:49 -26.1 Dark Down 26.1 173.9 Low 10:48:49 - 11:18:49 3070
Tonopah 11:03:44 -25.5 Dark Down 26.7 175.3 Low 10:48:44 - 11:18:44 3060
Lee Vining 11:03:49 -26.8 Dark Down 26.6 173.4 Low 10:48:49 - 11:18:49 3039
Bishop 11:03:49 -26.6 Dark Down 27.3 174.1 Low 10:48:49 - 11:18:49 3013
Beatty 11:03:41 -25.9 Dark Down 27.9 175.7 Low 10:48:41 - 11:18:41 3004
Indian Springs 11:03:34 -25.3 Dark Down 28.3 176.8 Low 10:48:34 - 11:18:34 2996
Henderson 11:03:29 -25.2 Dark Down 28.8 177.5 Low 10:48:29 - 11:18:29 2973
Patrick 11:03:21 -24.7 Dark Down 29.5 178.6 Low 10:48:21 - 11:18:21 2947
Kingman/Dolan Springs 11:03:23 -25.0 Dark Down 29.7 178.4 Low 10:48:23 - 11:18:23 2934
Laughlin/Bullhead City 11:03:26 -25.4 Dark Down 29.7 177.8 Low 10:48:26 - 11:18:26 2928
Mohave Valley 11:03:26 -25.5 Dark Down 30.0 177.8 Low 10:48:26 - 11:18:26 2913
Lake Havasu City 11:03:24 -25.5 Dark Down 30.4 178.1 Up 10:48:24 - 11:18:24 2893
CPSLO 11:04:08 -29.3 Dark Down 29.1 171.7 Low 10:49:08 - 11:19:08 2877
Parker 11:03:24 -25.7 Dark Down 30.7 178.1 Up 10:48:24 - 11:18:24 2873
George/Scottsdale 11:03:07 -24.2 Dark Down 31.2 180.6 Up 10:48:07 - 11:18:07 2866
Blythe 11:03:26 -26.2 Dark Down 31.3 177.8 Up 10:48:26 - 11:18:26 2841
Wildwood 11:03:49 -28.7 Dark Down 30.5 173.7 Up 10:48:49 - 11:18:49 2833
Idyllwild 11:03:41 -27.6 Dark Down 31.0 175.6 Up 10:48:41 - 11:18:41 2831
Calipatria 11:03:32 -27.1 Dark Down 31.7 176.8 Up 10:48:32 - 11:18:32 2804
Yuma 11:03:26 -26.7 Dark Down 32.2 177.7 Up 10:48:26 - 11:18:26 2786

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 02GW32, (2021/04/10 11:03UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  4.61 112
23Tau Sco      16:35:52.9 -28:12:58  2.8  4.28 110
26 Oph         17:00:09.6 -24:59:22  5.8  2.53 106
PPM 266013     16:49:35.2 -25:04:18  7.6  0.13 108
02GW32         16:49:01.1 -25:05:52 15.9       108
Positions are for J2000

Event circumstances last updated at 2021/01/19 21:58:19 UT

Marc W. Buie, Southwest Research Institute

RECON