RECON: TNO occultation with 15RY280

Event between 15RY280 and star GA1000:00082933 with event index number of 1973717

Geocentric closest approach at 2021/10/19 07:21:32 UTC

J2000 position of star is 00:53:24.0 +11:58:29
Equinox of date position of star is 00:54:32.3 +12:05:33
Stellar brightness G=10.5, use SENSEUP=4 with the MallinCam and and exposure time of 125 milli-seconds with the QHY174 camera.
Star is 11 degrees from the moon. Moon is 98% illuminated.
TNO apparent brightness V=23.7

[RECON map]
TNO is 41.3 AU from the Sun and 40.3 AU from the Earth.
The TNO is moving 24.8 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 131 seconds.
The 1-sigma cross-track error in the shadow position is 2999 km.
The sky-plane scale is 29214.0 km/arcsec.

The TNO has an absolute magnitude Hv=7.6
Diameter=174.6 km assuming a 5% albedo -- 7.4 sec chord
Diameter=71.3 km assuming a 30% albedo -- 3.0 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 15RY280, (2021/10/19 07:22UT)
Object            RA         Dec     mag  sep  mel
Algenib        00:14:21.7 +15:18:17  2.8 10.27  17
58 Psc         00:48:09.9 +12:05:33  5.5  1.56  11
PPM 116832     00:52:43.6 +12:54:10  7.2  0.92  12
PPM 116846     00:54:00.2 +12:22:49  9.0  0.32  12
PPM 116854     00:54:13.5 +11:53:34 10.9  0.21  11
15RY280        00:54:32.4 +12:05:34 10.5        12
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 25.1 km RECON observability=1.0 and success probability=1.1%
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 07:20:23 -49.6 Dark Up 51.5 188.5 Up 07:09:00 - 07:31:47 10902
Kelowna 07:20:25 -50.0 Dark Up 51.9 188.4 Up 07:09:01 - 07:31:48 10873
Peachland 07:20:25 -50.0 Dark Up 52.0 187.9 Up 07:09:01 - 07:31:48 10870
Victoria 07:20:37 -50.8 Dark Up 53.4 182.3 Up 07:09:13 - 07:32:00 10858
Summerland 07:20:25 -50.2 Dark Up 52.1 188.1 Up 07:09:01 - 07:31:48 10855
Penticton 07:20:25 -50.3 Dark Up 52.2 188.3 Up 07:09:01 - 07:31:48 10847
Oliver 07:20:25 -50.6 Dark Up 52.5 188.4 Up 07:09:02 - 07:31:49 10817
Anarchist Mountain Observatory 07:20:25 -50.8 Dark Up 52.7 188.7 Up 07:09:02 - 07:31:49 10798
Tonasket 07:20:26 -51.1 Dark Up 53.0 188.7 Up 07:09:02 - 07:31:49 10773
Okanogan 07:20:27 -51.4 Dark Up 53.4 188.5 Up 07:09:04 - 07:31:51 10748
Brewster 07:20:27 -51.7 Dark Up 53.6 188.2 Up 07:09:04 - 07:31:51 10729
Manson/Chelan 07:20:28 -51.8 Dark Up 53.9 187.7 Up 07:09:04 - 07:31:51 10720
Wenatchee 07:20:30 -52.3 Dark Up 54.4 187.5 Up 07:09:06 - 07:31:53 10683
Ellensburg 07:20:30 -52.7 Dark Up 54.8 187.2 Up 07:09:07 - 07:31:54 10653
Yakima 07:20:31 -53.1 Dark Up 55.2 187.2 Up 07:09:08 - 07:31:55 10618
Toppenish/White Swan 07:20:31 -53.3 Dark Up 55.4 187.6 Up 07:09:08 - 07:31:55 10595
Goldendale 07:20:33 -53.8 Dark Up 56.0 186.9 Up 07:09:09 - 07:31:56 10557
Pasco 07:20:27 -53.6 Dark Up 55.4 189.7 Up 07:09:04 - 07:31:51 10551
The Dalles 07:20:34 -53.9 Dark Up 56.2 186.3 Up 07:09:11 - 07:31:58 10547
PNWRO 07:20:26 -53.8 Dark Up 55.6 190.2 Up 07:09:03 - 07:31:50 10523
Maupin 07:20:34 -54.4 Dark Up 56.6 186.6 Up 07:09:10 - 07:31:57 10507
Sisters 07:20:37 -55.2 Dark Up 57.6 185.9 Up 07:09:13 - 07:32:00 10442
Redmond 07:20:35 -55.2 Dark Up 57.6 186.6 Up 07:09:11 - 07:31:58 10429
Bend 07:20:36 -55.4 Dark Up 57.8 186.4 Up 07:09:13 - 07:32:00 10414
Oregon Observatory 07:20:37 -55.6 Dark Up 58.0 186.2 Up 07:09:13 - 07:32:00 10402
La Pine/Gilchrist 07:20:38 -55.8 Dark Up 58.2 186.1 Up 07:09:14 - 07:32:01 10385
North Lake 07:20:36 -56.3 Dark Up 58.5 187.3 Up 07:09:12 - 07:31:59 10329
Chiloquin 07:20:40 -56.8 Dark Up 59.3 185.7 Up 07:09:17 - 07:32:04 10295
Paisley 07:20:36 -56.9 Dark Up 59.1 188.1 Up 07:09:12 - 07:31:59 10269
Klamath Falls 07:20:40 -57.1 Dark Up 59.6 185.9 Up 07:09:17 - 07:32:04 10261
Lakeview 07:20:36 -57.4 Dark Up 59.5 188.6 Up 07:09:12 - 07:31:59 10217
Cedarville 07:20:36 -58.1 Dark Up 60.2 189.1 Up 07:09:12 - 07:31:59 10152
Fall River/Burney 07:20:41 -58.3 Dark Up 60.8 186.9 Up 07:09:17 - 07:32:04 10142
Susanville 07:20:39 -59.1 Dark Up 61.3 188.5 Up 07:09:15 - 07:32:02 10062
Greenville 07:20:40 -59.3 Dark Up 61.6 188.0 Up 07:09:16 - 07:32:03 10045
Gimple 07:20:40 -59.3 Dark Up 61.6 188.1 Up 07:09:16 - 07:32:03 10042
Quincy 07:20:40 -59.5 Dark Up 61.8 188.0 Up 07:09:17 - 07:32:04 10026
Portola 07:20:38 -59.7 Dark Up 61.9 189.0 Up 07:09:15 - 07:32:02 10000
Reno 07:20:36 -60.1 Dark Up 62.1 190.4 Up 07:09:13 - 07:32:00 9957
Carson City 07:20:37 -60.4 Dark Up 62.4 190.6 Up 07:09:13 - 07:32:00 9922
Gardnerville 07:20:36 -60.7 Dark Up 62.7 190.8 Up 07:09:13 - 07:32:00 9898
Yerington 07:20:36 -60.7 Dark Up 62.5 192.0 Up 07:09:12 - 07:31:59 9885
Hawthorne 07:20:34 -61.2 Dark Up 62.9 193.3 Up 07:09:11 - 07:31:58 9826
Lee Vining 07:20:37 -61.7 Dark Up 63.5 192.5 Up 07:09:13 - 07:32:00 9786
Tonopah 07:20:30 -61.9 Dark Up 63.1 196.5 Up 07:09:07 - 07:31:54 9740
Bishop 07:20:35 -62.4 Dark Up 64.0 194.4 Up 07:09:12 - 07:31:59 9707
Dunrhomin 07:19:50 -58.9 Dark Up 56.9 216.6 Up 07:08:27 - 07:31:14 9644
Beatty 07:20:30 -63.1 Dark Up 64.1 198.2 Up 07:09:07 - 07:31:54 9615
CPSLO 07:20:45 -64.1 Dark Up 66.4 190.2 Up 07:09:21 - 07:32:08 9576
Indian Springs 07:20:27 -63.5 Dark Up 64.1 200.7 Up 07:09:03 - 07:31:50 9552
Henderson 07:20:25 -64.0 Dark Up 64.4 202.6 Up 07:09:01 - 07:31:48 9480
Wildwood 07:20:40 -65.6 Dark Up 67.2 195.8 Up 07:09:16 - 07:32:03 9394
Patrick 07:20:22 -64.7 Dark Up 64.6 205.5 Up 07:08:59 - 07:31:46 9386
Laughlin/Bullhead City 07:20:25 -64.9 Dark Up 65.0 204.2 Up 07:09:01 - 07:31:48 9382
Kingman/Dolan Springs 07:20:22 -64.9 Dark Up 64.8 205.3 Up 07:08:59 - 07:31:46 9369
Mohave Valley 07:20:25 -65.2 Dark Up 65.3 204.4 Up 07:09:02 - 07:31:49 9354
Lake Havasu City 07:20:24 -65.6 Dark Up 65.6 205.3 Up 07:09:01 - 07:31:48 9307
Idyllwild 07:20:33 -66.2 Dark Up 67.0 200.6 Up 07:09:10 - 07:31:57 9302
Parker 07:20:24 -65.9 Dark Up 65.9 205.7 Up 07:09:00 - 07:31:47 9271
Blythe 07:20:26 -66.5 Dark Up 66.5 205.6 Up 07:09:03 - 07:31:50 9228
Calipatria 07:20:30 -66.9 Dark Up 67.2 203.9 Up 07:09:07 - 07:31:54 9206
George/Scottsdale 07:20:17 -66.3 Dark Up 65.3 211.4 Up 07:08:53 - 07:31:40 9160
Yuma 07:20:27 -67.4 Dark Up 67.3 206.5 Up 07:09:03 - 07:31:50 9136

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 15RY280, (2021/10/19 07:22UT)
Object            RA         Dec     mag  sep  mel
Algenib        00:13:14.2 +15:11:01  2.8 10.27  17
58 Psc         00:47:01.6 +11:58:25  5.5  1.56  11
PPM 116832     00:51:35.0 +12:47:05  7.2  0.92  12
PPM 116846     00:52:51.7 +12:15:44  9.0  0.32  12
PPM 116854     00:53:05.0 +11:46:29 10.9  0.21  11
15RY280        00:53:24.0 +11:58:29 10.5        11
Positions are for J2000

Event circumstances last updated at 2021/10/08 00:57:03 UT

Marc W. Buie, Southwest Research Institute

RECON