RECON: TNO occultation with 02GS32

Event between 02GS32 and star GA0660:09140999 with event index number of 253584

Geocentric closest approach at 2020/04/17 08:59:38 UTC

J2000 position of star is 17:03:13.5 -23:09:18
Equinox of date position of star is 17:04:21.8 -23:10:50
Stellar brightness G=14.5, use SENSEUP=128
Star is 68 degrees from the moon. Moon is 27% illuminated.
TNO apparent brightness V=23.4

[RECON map]
TNO is 38.4 AU from the Sun and 37.7 AU from the Earth.
The TNO is moving 13.9 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 1207 seconds.
The 1-sigma cross-track error in the shadow position is 5071 km.
The sky-plane scale is 27362.3 km/arcsec.

The TNO has an absolute magnitude Hv=7.5
Diameter=187.9 km assuming a 5% albedo -- 13.5 sec chord
Diameter=76.7 km assuming a 30% albedo -- 5.5 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 02GS32, (2020/04/17 09:00UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:39.3 -26:28:31  0.9  8.34  75
35Eta Oph      17:11:32.6 -15:44:55  2.6  7.62  68
PPM 266403     17:07:24.6 -21:35:28  6.3  1.73  68
PPM 266324     17:04:35.3 -23:10:45  7.5  0.03  68
02GS32         17:04:27.2 -23:10:57 14.5        68
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 0.7 sigma about the mid-time.
The median site spacing is 5.7 km RECON observability=0.4 and success probability=3.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 09:03:08 -27.7 Dark Down 11.2 148.9 Really Low 08:48:08 - 09:18:08 1261
Summerland 09:03:10 -27.8 Dark Down 11.1 148.6 Really Low 08:48:10 - 09:18:10 1251
Penticton 09:03:10 -28.1 Dark Down 11.4 148.7 Really Low 08:48:10 - 09:18:10 1241
Okanagan Falls 09:03:11 -28.3 Dark Down 11.6 148.7 Really Low 08:48:11 - 09:18:11 1233
Oliver 09:03:11 -28.4 Dark Down 11.7 148.7 Really Low 08:48:11 - 09:18:11 1226
Anarchist Mountain Observatory 09:03:11 -28.5 Dark Down 11.9 148.8 Really Low 08:48:11 - 09:18:11 1223
Oroville 09:03:11 -28.6 Dark Down 12.0 148.8 Really Low 08:48:11 - 09:18:11 1218
Tonasket 09:03:12 -28.8 Dark Down 12.2 148.7 Really Low 08:48:12 - 09:18:12 1207
Okanogan 09:03:13 -29.2 Dark Down 12.4 148.6 Really Low 08:48:13 - 09:18:13 1189
Brewster 09:03:15 -29.5 Dark Down 12.6 148.4 Really Low 08:48:15 - 09:18:15 1172
Manson/Chelan 09:03:17 -29.8 Dark Down 12.6 148.0 Really Low 08:48:17 - 09:18:17 1154
Entiat 09:03:19 -30.0 Dark Down 12.8 148.0 Really Low 08:48:19 - 09:18:19 1142
Wenatchee 09:03:20 -30.2 Dark Down 13.0 147.8 Really Low 08:48:20 - 09:18:20 1127
Ellensburg 09:03:21 -30.7 Dark Down 13.2 147.6 Really Low 08:48:21 - 09:18:21 1103
Pasco 09:03:18 -31.1 Dark Down 14.4 148.7 Really Low 08:48:18 - 09:18:18 1100
PNWRO 09:03:17 -31.3 Dark Down 14.7 148.9 Really Low 08:48:17 - 09:18:17 1093
Niwot 09:02:21 -31.8 Dark Down 24.2 160.4 Low 08:47:21 - 09:17:21 1090
Yakima 09:03:23 -31.1 Dark Down 13.6 147.5 Really Low 08:48:23 - 09:18:23 1083
George/Umatilla 09:03:20 -31.4 Dark Down 14.6 148.5 Really Low 08:48:20 - 09:18:20 1079
Toppenish/White Swan 09:03:23 -31.2 Dark Down 13.8 147.7 Really Low 08:48:23 - 09:18:23 1076
Goldendale 09:03:26 -31.9 Dark Down 14.1 147.2 Really Low 08:48:26 - 09:18:26 1038
The Dalles 09:03:29 -32.1 Dark Down 14.2 146.9 Really Low 08:48:29 - 09:18:29 1018
Maupin 09:03:29 -32.5 Dark Down 14.6 146.9 Really Low 08:48:29 - 09:18:29 999
Madras/Culver 09:03:31 -33.1 Dark Down 15.0 146.8 Really Low 08:48:31 - 09:18:31 970
Redmond 09:03:32 -33.4 Dark Down 15.3 146.7 Really Low 08:48:32 - 09:18:32 950
Sisters 09:03:34 -33.5 Dark Down 15.1 146.4 Really Low 08:48:34 - 09:18:34 941
Bend 09:03:34 -33.6 Dark Down 15.4 146.6 Really Low 08:48:34 - 09:18:34 935
Oregon Observatory 09:03:34 -33.8 Dark Down 15.5 146.4 Really Low 08:48:34 - 09:18:34 923
La Pine/Gilchrist 09:03:35 -34.0 Dark Down 15.7 146.4 Really Low 08:48:35 - 09:18:35 910
North Lake 09:03:34 -34.3 Dark Down 16.3 146.8 Really Low 08:48:34 - 09:18:34 902
Paisley 09:03:34 -34.8 Dark Down 16.9 147.0 Really Low 08:48:34 - 09:18:34 881
Lakeview 09:03:34 -35.2 Dark Down 17.4 147.1 Really Low 08:48:34 - 09:18:34 858
Chiloquin 09:03:40 -35.2 Dark Down 16.5 145.9 Really Low 08:48:40 - 09:18:40 840
Cedarville 09:03:35 -35.8 Dark Down 18.0 147.2 Really Low 08:48:35 - 09:18:35 826
Klamath Falls 09:03:41 -35.5 Dark Down 16.8 145.9 Really Low 08:48:41 - 09:18:41 823
Tulelake 09:03:40 -35.7 Dark Down 17.1 146.1 Really Low 08:48:40 - 09:18:40 816
Fall River/Burney 09:03:42 -36.5 Dark Down 17.9 146.0 Really Low 08:48:42 - 09:18:42 766
Susanville 09:03:40 -36.9 Dark Down 18.7 146.6 Really Low 08:48:40 - 09:18:40 749
Gimple 09:03:42 -37.3 Dark Down 18.9 146.3 Really Low 08:48:42 - 09:18:42 727
Greenville 09:03:42 -37.3 Dark Down 18.9 146.3 Really Low 08:48:42 - 09:18:42 725
Reno 09:03:38 -37.5 Dark Down 19.8 147.1 Really Low 08:48:38 - 09:18:38 720
Portola 09:03:41 -37.5 Dark Down 19.3 146.6 Really Low 08:48:41 - 09:18:41 718
Quincy 09:03:43 -37.5 Dark Down 19.0 146.2 Really Low 08:48:43 - 09:18:43 713
Yerington 09:03:36 -37.9 Dark Down 20.6 147.6 Low 08:48:36 - 09:18:36 704
Carson City 09:03:39 -37.9 Dark Down 20.1 147.1 Low 08:48:39 - 09:18:39 699
Tonopah 09:03:28 -38.2 Dark Down 22.1 149.1 Low 08:48:28 - 09:18:28 698
Hawthorne 09:03:34 -38.2 Dark Down 21.2 147.9 Low 08:48:34 - 09:18:34 690
Gardnerville 09:03:39 -38.1 Dark Down 20.4 147.0 Low 08:48:39 - 09:18:39 685
Indian Springs 09:03:24 -39.0 Dark Down 24.0 150.1 Low 08:48:24 - 09:18:24 646
Lee Vining 09:03:38 -38.8 Dark Down 21.4 147.4 Low 08:48:38 - 09:18:38 642
Beatty 09:03:28 -39.1 Dark Down 23.3 149.2 Low 08:48:28 - 09:18:28 639
Henderson 09:03:20 -39.2 Dark Down 24.8 150.6 Low 08:48:20 - 09:18:20 630
Bishop 09:03:36 -39.2 Dark Down 22.3 147.9 Low 08:48:36 - 09:18:36 624
Patrick 09:03:16 -39.4 Dark Down 25.7 151.5 Low 08:48:16 - 09:18:16 619
DCO 09:03:13 -39.4 Dark Down 26.3 152.0 Low 08:48:13 - 09:18:13 617
Kingman/Dolan Springs 09:03:17 -39.7 Dark Down 25.9 151.3 Low 08:48:17 - 09:18:17 600
Searchlight/Boulder City 09:03:21 -39.7 Dark Down 25.3 150.5 Low 08:48:21 - 09:18:21 595
Lone Pine 09:03:36 -39.8 Dark Down 23.0 148.0 Low 08:48:36 - 09:18:36 585
Laughlin/Bullhead City 09:03:20 -39.9 Dark Down 25.7 150.8 Low 08:48:20 - 09:18:20 585
Mohave Valley 09:03:20 -40.1 Dark Down 25.9 150.7 Low 08:48:20 - 09:18:20 568
Lake Havasu City 09:03:20 -40.4 Dark Down 26.4 150.9 Low 08:48:20 - 09:18:20 548
Parker 09:03:20 -40.7 Dark Down 26.7 150.8 Low 08:48:20 - 09:18:20 526
Blythe 09:03:23 -41.2 Dark Down 27.0 150.4 Low 08:48:23 - 09:18:23 483
Idyllwild 09:03:34 -41.9 Dark Down 26.1 148.5 Low 08:48:34 - 09:18:34 435
CPSLO 09:03:52 -41.7 Dark Down 23.0 145.5 Low 08:48:52 - 09:18:52 431
Calipatria 09:03:29 -42.0 Dark Down 27.1 149.4 Low 08:48:29 - 09:18:29 426
Yuma 09:03:24 -42.1 Dark Down 27.8 150.1 Low 08:48:24 - 09:18:24 420
Wildwood 09:03:43 -42.2 Dark Down 24.9 147.0 Low 08:48:43 - 09:18:43 407

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 02GS32, (2020/04/17 09:00UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  8.34  75
35Eta Oph      17:10:22.7 -15:43:29  2.6  7.62  68
PPM 266403     17:06:11.8 -21:33:54  6.3  1.73  68
PPM 266324     17:03:21.6 -23:09:06  7.5  0.03  68
02GS32         17:03:13.5 -23:09:18 14.5        68
Positions are for J2000

Event circumstances last updated at 2018/10/26 20:57:25 UT

Marc W. Buie, Southwest Research Institute

RECON