RECON: TNO occultation with 600217

Event between (600217) 11QY100 and star GA0860:01062172 with event index number of 2730090

Geocentric closest approach at 2023/03/07 03:16:56 UTC

J2000 position of star is 06:12:27.9 -02:13:21
Equinox of date position of star is 06:13:34.2 -02:13:46
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 73 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=21.4

[RECON map]
TNO is 19.8 AU from the Sun and 19.5 AU from the Earth.
The TNO is moving 13.3 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 53 seconds.
The 1-sigma cross-track error in the shadow position is 1035 km.
The sky-plane scale is 14136.2 km/arcsec.

The TNO has an absolute magnitude Hv=8.2
Diameter=137.4 km assuming a 5% albedo -- 10.3 sec chord
Diameter=56.1 km assuming a 30% albedo -- 4.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 600217, (2023/03/07 03:17UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:25.6 +07:24:34  0.4 10.55  75
Saiph          05:48:51.4 -09:39:47  2.1  9.65  80
PPM 188936     06:15:03.4 -03:44:58  5.8  1.56  73
PPM 176170     06:14:45.8 -02:15:41  7.8  0.28  72
600217         06:13:38.0 -02:13:47 16.6        72
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 5.8 km RECON observability=1.0 and success probability=19.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Dunrhomin 03:22:13 -28.1 Dark Up 44.8 204.1 Up 03:17:17 - 03:27:10 2437
Sleaford 03:23:20 -23.6 Dark Up 34.0 199.9 Up 03:18:23 - 03:28:16 2132
George/Scottsdale 03:21:33 -24.3 Dark Up 52.8 196.7 Up 03:16:36 - 03:26:29 1944
Patrick 03:21:44 -22.5 Dark Up 51.6 193.0 Up 03:16:48 - 03:26:41 1749
Kingman/Dolan Springs 03:21:43 -22.3 Dark Up 51.9 192.8 Up 03:16:46 - 03:26:39 1734
Parker 03:21:36 -22.3 Dark Up 52.9 192.7 Up 03:16:40 - 03:26:33 1718
Lake Havasu City 03:21:38 -22.2 Dark Up 52.6 192.5 Up 03:16:41 - 03:26:34 1714
Yuma 03:21:26 -22.2 Dark Up 54.4 192.5 Up 03:16:29 - 03:26:22 1694
Blythe 03:21:32 -22.1 Dark Up 53.5 192.3 Up 03:16:35 - 03:26:28 1694
Mohave Valley 03:21:41 -22.0 Dark Up 52.3 192.0 Up 03:16:44 - 03:26:37 1689
Laughlin/Bullhead City 03:21:43 -21.9 Dark Up 52.0 192.0 Up 03:16:46 - 03:26:39 1687
Henderson 03:21:49 -21.5 Dark Up 51.2 191.1 Up 03:16:52 - 03:26:45 1645
Calipatria 03:21:30 -21.4 Dark Up 54.2 190.8 Up 03:16:33 - 03:26:26 1609
Indian Springs 03:21:52 -20.8 Dark Up 50.8 189.9 Up 03:16:56 - 03:26:49 1580
Idyllwild 03:21:33 -20.3 Dark Up 53.7 188.7 Up 03:16:37 - 03:26:30 1497
Beatty 03:21:54 -19.9 Dark Up 50.6 188.2 Up 03:16:58 - 03:26:51 1483
Tonopah 03:22:02 -19.4 Dark Up 49.5 187.4 Up 03:17:06 - 03:26:59 1439
Bishop 03:21:58 -18.6 Dark Up 50.3 185.6 Up 03:17:02 - 03:26:55 1337
Wildwood 03:21:36 -18.8 Dark Up 53.6 185.5 Up 03:16:40 - 03:26:33 1322
Hawthorne 03:22:05 -18.3 Dark Up 49.1 185.2 Up 03:17:09 - 03:27:02 1314
PNWRO 03:22:50 -17.1 AT Up 41.7 184.4 Up 03:17:53 - 03:27:46 1276
Lee Vining 03:22:02 -18.0 AT Up 49.7 184.4 Up 03:17:05 - 03:26:58 1272
Yerington 03:22:08 -17.8 AT Up 48.7 184.3 Up 03:17:11 - 03:27:04 1267
Pasco 03:22:51 -16.9 AT Up 41.4 184.1 Up 03:17:55 - 03:27:48 1258
Anarchist Mountain Observatory 03:23:06 -16.3 AT Up 38.7 183.7 Up 03:18:09 - 03:28:02 1233
Tonasket 03:23:04 -16.3 AT Up 39.0 183.6 Up 03:18:08 - 03:28:01 1229
Kelowna 03:23:11 -16.0 AT Up 37.9 183.6 Up 03:18:15 - 03:28:08 1224
Oliver 03:23:08 -16.1 AT Up 38.5 183.5 Up 03:18:12 - 03:28:05 1219
Okanogan 03:23:04 -16.2 AT Up 39.4 183.4 Up 03:18:07 - 03:28:00 1219
Penticton 03:23:08 -16.0 AT Up 38.2 183.4 Up 03:18:12 - 03:28:05 1218
Gardnerville 03:22:08 -17.4 AT Up 48.8 183.4 Up 03:17:12 - 03:27:05 1216
Carson City 03:22:09 -17.3 AT Up 48.5 183.4 Up 03:17:13 - 03:27:06 1212
Reno 03:22:12 -17.3 AT Up 48.2 183.3 Up 03:17:16 - 03:27:09 1210
Summerland 03:23:09 -16.0 AT Up 38.1 183.3 Up 03:18:13 - 03:28:06 1210
Brewster 03:23:02 -16.1 AT Up 39.6 183.2 Up 03:18:06 - 03:27:59 1204
Peachland 03:23:10 -15.9 AT Up 38.0 183.2 Up 03:18:14 - 03:28:07 1203
Cedarville 03:22:24 -16.8 AT Up 46.2 182.8 Up 03:17:27 - 03:27:20 1180
Manson/Chelan 03:23:00 -15.9 AT Up 39.9 182.7 Up 03:18:04 - 03:27:57 1177
Lakeview 03:22:28 -16.6 AT Up 45.6 182.5 Up 03:17:31 - 03:27:24 1165
Wenatchee 03:22:58 -15.9 AT Up 40.3 182.5 Up 03:18:02 - 03:27:55 1164
Toppenish/White Swan 03:22:52 -16.0 AT Up 41.4 182.4 Up 03:17:56 - 03:27:49 1160
Kamloops 03:23:15 -15.3 AT Up 37.1 182.4 Up 03:18:18 - 03:28:11 1158
Portola 03:22:14 -16.7 AT Up 47.9 182.3 Up 03:17:17 - 03:27:10 1154
Paisley 03:22:31 -16.4 AT Up 45.1 182.2 Up 03:17:34 - 03:27:27 1149
Ellensburg 03:22:56 -15.8 AT Up 40.8 182.2 Up 03:17:59 - 03:27:52 1148
Yakima 03:22:54 -15.8 AT Up 41.2 182.2 Up 03:17:58 - 03:27:51 1147
Susanville 03:22:17 -16.5 AT Up 47.3 182.1 Up 03:17:21 - 03:27:14 1139
CPSLO 03:21:45 -17.0 AT Up 52.5 182.1 Up 03:16:48 - 03:26:41 1134
Goldendale 03:22:51 -15.8 AT Up 41.9 181.8 Up 03:17:54 - 03:27:47 1127
Gimple 03:22:15 -16.4 AT Up 47.6 181.7 Up 03:17:19 - 03:27:12 1121
North Lake 03:22:35 -16.0 AT Up 44.5 181.7 Up 03:17:38 - 03:27:31 1120
Quincy 03:22:14 -16.4 AT Up 47.8 181.6 Up 03:17:18 - 03:27:11 1114
Greenville 03:22:16 -16.3 AT Up 47.6 181.6 Up 03:17:19 - 03:27:12 1114
Maupin 03:22:46 -15.7 AT Up 42.6 181.5 Up 03:17:49 - 03:27:42 1107
Redmond 03:22:40 -15.7 AT Up 43.5 181.3 Up 03:17:44 - 03:27:37 1099
The Dalles 03:22:48 -15.5 AT Up 42.2 181.3 Up 03:17:51 - 03:27:44 1098
Bend 03:22:39 -15.6 AT Up 43.7 181.1 Up 03:17:42 - 03:27:35 1087
Fall River/Burney 03:22:21 -15.9 AT Up 46.7 181.0 Up 03:17:25 - 03:27:18 1077
Oregon Observatory 03:22:38 -15.6 AT Up 43.9 181.0 Up 03:17:41 - 03:27:34 1076
La Pine/Gilchrist 03:22:37 -15.5 AT Up 44.1 180.9 Up 03:17:40 - 03:27:33 1071
Sisters 03:22:41 -15.4 AT Up 43.5 180.8 Up 03:17:44 - 03:27:37 1067
Klamath Falls 03:22:28 -15.5 AT Up 45.6 180.5 Up 03:17:32 - 03:27:25 1047
Chiloquin 03:22:30 -15.4 AT Up 45.2 180.3 Up 03:17:34 - 03:27:27 1041
Victoria 03:23:04 -13.7 AT Up 39.2 178.5 Up 03:18:07 - 03:28:00 935

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 600217, (2023/03/07 03:17UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 10.55  75
Saiph          05:47:45.4 -09:40:11  2.1  9.65  80
PPM 188936     06:13:54.2 -03:44:29  5.8  1.56  73
PPM 176170     06:13:35.8 -02:15:12  7.8  0.28  72
600217         06:12:27.9 -02:13:21 16.6        73
Positions are for J2000

Event circumstances last updated at 2021/12/02 01:18:49 UT

Marc W. Buie, Southwest Research Institute

RECON