RECON: TNO occultation with 470593

Event between (470593) 08LP17 and star GA0640:11414197 with event index number of 1088268

Geocentric closest approach at 2021/06/02 10:07:40 UTC

J2000 position of star is 17:08:45.6 -24:23:13
Equinox of date position of star is 17:10:02.8 -24:24:45
Stellar brightness G=16.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 85 degrees from the moon. Moon is 49% illuminated.
TNO apparent brightness V=21.0

[RECON map]
TNO is 30.7 AU from the Sun and 29.7 AU from the Earth.
The TNO is moving 22.6 km/sec on the sky relative to the star, or, 3.8 arcsec/hr.
The 1-sigma error in the time of the event is 62 seconds.
The 1-sigma cross-track error in the shadow position is 1131 km.
The sky-plane scale is 21522.5 km/arcsec.

The TNO has an absolute magnitude Hv=6.2
Diameter=346.7 km assuming a 5% albedo -- 15.4 sec chord
Diameter=141.6 km assuming a 30% albedo -- 6.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 470593, (2021/06/02 10:08UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:43.4 -26:28:40  0.9  9.12  93
23Tau Sco      16:37:13.2 -28:15:31  2.8  8.30  91
26 Oph         17:01:28.4 -25:01:12  5.8  2.04  87
PPM 266438     17:09:15.1 -25:01:29  7.2  0.64  85
PPM 266459     17:09:59.0 -24:27:02  9.4  0.04  85
470593         17:10:04.1 -24:24:47 16.4        85
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 18.8 km RECON observability=0.5 and success probability=0.0%
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 10:06:24 -11.9 NT Up 11.8 204.3 Really Low 10:00:44 - 10:12:04 10312
Peachland 10:06:25 -12.5 AT Up 12.4 203.9 Really Low 10:00:45 - 10:12:05 10301
Kelowna 10:06:24 -12.3 AT Up 12.2 204.2 Really Low 10:00:44 - 10:12:04 10301
Victoria 10:06:34 -14.7 AT Up 14.4 200.8 Really Low 10:00:54 - 10:12:14 10301
Summerland 10:06:24 -12.6 AT Up 12.5 204.0 Really Low 10:00:44 - 10:12:04 10295
Penticton 10:06:23 -12.6 AT Up 12.6 204.1 Really Low 10:00:43 - 10:12:03 10291
Oliver 10:06:23 -12.9 AT Up 12.9 204.1 Really Low 10:00:43 - 10:12:03 10279
Anarchist Mountain Observatory 10:06:22 -13.0 AT Up 13.0 204.3 Really Low 10:00:42 - 10:12:02 10272
Tonasket 10:06:22 -13.3 AT Up 13.3 204.3 Really Low 10:00:42 - 10:12:02 10261
Okanogan 10:06:21 -13.6 AT Up 13.6 204.2 Really Low 10:00:41 - 10:12:01 10251
Brewster 10:06:22 -13.9 AT Up 13.9 204.0 Really Low 10:00:42 - 10:12:02 10244
Manson/Chelan 10:06:23 -14.2 AT Up 14.2 203.7 Really Low 10:00:43 - 10:12:03 10241
Wenatchee 10:06:22 -14.7 AT Up 14.7 203.6 Really Low 10:00:42 - 10:12:02 10225
Ellensburg 10:06:23 -15.1 AT Up 15.1 203.5 Really Low 10:00:43 - 10:12:03 10212
Yakima 10:06:22 -15.5 AT Up 15.5 203.5 Really Low 10:00:42 - 10:12:02 10197
Toppenish/White Swan 10:06:21 -15.6 AT Up 15.7 203.7 Really Low 10:00:41 - 10:12:01 10186
Goldendale 10:06:22 -16.3 AT Up 16.3 203.3 Really Low 10:00:42 - 10:12:02 10170
The Dalles 10:06:23 -16.6 AT Up 16.6 203.0 Really Low 10:00:43 - 10:12:03 10165
Pasco 10:06:17 -15.3 AT Up 15.4 204.8 Really Low 10:00:37 - 10:11:57 10165
PNWRO 10:06:16 -15.4 AT Up 15.6 205.0 Really Low 10:00:36 - 10:11:56 10152
Maupin 10:06:22 -16.9 AT Up 17.0 203.2 Really Low 10:00:42 - 10:12:02 10147
Sisters 10:06:22 -17.8 AT Up 17.9 202.8 Really Low 10:00:42 - 10:12:02 10116
Redmond 10:06:21 -17.7 AT Up 17.8 203.2 Really Low 10:00:41 - 10:12:01 10110
Bend 10:06:21 -18.0 AT Up 18.1 203.1 Really Low 10:00:41 - 10:12:01 10103
Oregon Observatory 10:06:21 -18.2 Dark Up 18.3 203.0 Really Low 10:00:41 - 10:12:01 10097
La Pine/Gilchrist 10:06:21 -18.4 Dark Up 18.5 203.0 Really Low 10:00:41 - 10:12:01 10089
North Lake 10:06:18 -18.5 Dark Up 18.7 203.6 Really Low 10:00:38 - 10:11:58 10062
Paisley 10:06:17 -18.9 Dark Up 19.1 204.0 Really Low 10:00:37 - 10:11:57 10033
Klamath Falls 10:06:20 -19.7 Dark Up 19.9 202.9 Really Low 10:00:40 - 10:12:00 10027
Lakeview 10:06:15 -19.2 Dark Up 19.5 204.2 Really Low 10:00:35 - 10:11:55 10007
Cedarville 10:06:14 -19.7 Dark Up 20.0 204.5 Low 10:00:34 - 10:11:54 9973
Fall River/Burney 10:06:17 -20.6 Dark Up 20.9 203.4 Low 10:00:37 - 10:11:57 9966
Susanville 10:06:14 -20.9 Dark Up 21.2 204.2 Low 10:00:34 - 10:11:54 9925
Greenville 10:06:14 -21.2 Dark Up 21.5 204.0 Low 10:00:34 - 10:11:54 9916
Gimple 10:06:14 -21.2 Dark Up 21.5 204.1 Low 10:00:34 - 10:11:54 9914
Quincy 10:06:14 -21.4 Dark Up 21.7 204.0 Low 10:00:34 - 10:11:54 9905
Portola 10:06:12 -21.3 Dark Up 21.7 204.5 Low 10:00:32 - 10:11:52 9893
Reno 10:06:10 -21.3 Dark Up 21.7 205.1 Low 10:00:30 - 10:11:50 9870
Carson City 10:06:09 -21.6 Dark Up 22.1 205.2 Low 10:00:29 - 10:11:49 9851
Gardnerville 10:06:09 -21.8 Dark Up 22.3 205.3 Low 10:00:29 - 10:11:49 9838
Yerington 10:06:07 -21.5 Dark Up 22.0 205.8 Low 10:00:27 - 10:11:47 9832
Hawthorne 10:06:04 -21.6 Dark Up 22.3 206.3 Low 10:00:24 - 10:11:44 9799
Lee Vining 10:06:05 -22.3 Dark Up 22.9 206.0 Low 10:00:25 - 10:11:45 9777
Tonopah 10:05:59 -21.4 Dark Up 22.2 207.7 Low 10:00:19 - 10:11:39 9752
Bishop 10:06:02 -22.5 Dark Up 23.2 206.8 Low 10:00:22 - 10:11:42 9733
Beatty 10:05:55 -22.2 Dark Up 23.0 208.3 Low 10:00:15 - 10:11:35 9680
CPSLO 10:06:07 -25.2 Dark Up 25.9 205.1 Low 10:00:27 - 10:11:47 9649
Indian Springs 10:05:51 -21.9 Dark Up 22.9 209.3 Low 10:00:11 - 10:11:31 9643
Dunrhomin 10:05:25 -13.9 AT Up 15.4 217.5 Really Low 09:59:45 - 10:11:05 9642
Henderson 10:05:48 -22.0 Dark Up 23.1 210.1 Low 10:00:08 - 10:11:28 9600
Wildwood 10:05:59 -25.3 Dark Up 26.2 207.2 Low 10:00:19 - 10:11:39 9547
Patrick 10:05:44 -22.0 Dark Up 23.2 211.2 Low 10:00:04 - 10:11:24 9544
Laughlin/Bullhead City 10:05:46 -22.5 Dark Up 23.7 210.6 Low 10:00:06 - 10:11:26 9541
Kingman/Dolan Springs 10:05:44 -22.3 Dark Up 23.5 211.0 Low 10:00:04 - 10:11:24 9534
Mohave Valley 10:05:46 -22.8 Dark Up 23.9 210.7 Low 10:00:06 - 10:11:26 9525
Lake Havasu City 10:05:44 -22.9 Dark Up 24.2 211.0 Low 10:00:04 - 10:11:24 9496
Idyllwild 10:05:51 -24.7 Dark Up 25.8 209.0 Low 10:00:11 - 10:11:31 9494
Parker 10:05:43 -23.2 Dark Up 24.5 211.1 Low 10:00:03 - 10:11:23 9474
Blythe 10:05:43 -23.8 Dark Up 25.0 210.9 Low 10:00:03 - 10:11:23 9448
Calipatria 10:05:47 -24.6 Dark Up 25.9 210.2 Low 10:00:07 - 10:11:27 9434
George/Scottsdale 10:05:35 -22.3 Dark Up 23.8 213.3 Low 09:59:55 - 10:11:15 9402
Yuma 10:05:43 -24.5 Dark Up 25.8 211.1 Low 10:00:03 - 10:11:23 9390

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 470593, (2021/06/02 10:08UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  9.12  93
23Tau Sco      16:35:52.9 -28:12:58  2.8  8.30  91
26 Oph         17:00:09.6 -24:59:22  5.8  2.04  87
PPM 266438     17:07:56.2 -24:59:54  7.2  0.64  85
PPM 266459     17:08:40.4 -24:25:28  9.4  0.04  85
470593         17:08:45.6 -24:23:13 16.4        85
Positions are for J2000

Event circumstances last updated at 2021/01/21 21:36:50 UT

Marc W. Buie, Southwest Research Institute

RECON