RECON: TNO occultation with 15BQ518

Event between 15BQ518 and star GA0800:04016419 with event index number of 1058761

Geocentric closest approach at 2021/03/03 06:43:25 UTC

J2000 position of star is 10:43:47.0 -09:05:59
Equinox of date position of star is 10:44:47.7 -09:12:22
Stellar brightness G=13.9, use SENSEUP=64
Star is 53 degrees from the moon. Moon is 80% illuminated.
TNO apparent brightness V=26.3

[RECON map]
TNO is 42.7 AU from the Sun and 41.7 AU from the Earth.
The TNO is moving 25.5 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 117 seconds.
The 1-sigma cross-track error in the shadow position is 2217 km.
The sky-plane scale is 30254.1 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=396.3 km assuming a 5% albedo -- 2.4 sec chord
Diameter=161.8 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 15BQ518, (2021/03/03 06:43UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:29.8 +11:51:47  1.3 22.83  66
Alphard        09:28:37.7 -08:45:05  2.0 18.82  72
PPM 193828     10:50:47.1 -09:57:55  5.5  1.65  52
PPM 193705     10:43:30.9 -08:50:18  7.1  0.50  53
PPM 193719     10:44:17.6 -09:11:31  9.3  0.14  53
15BQ518        10:44:50.6 -09:12:40 13.9        53
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 12.8 km RECON observability=1.0 and success probability=6.4%
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 06:45:27 -43.1 Dark Up 28.7 160.1 Low 06:35:12 - 06:55:43 4628
Kelowna 06:45:27 -43.4 Dark Up 29.0 159.8 Low 06:35:12 - 06:55:43 4599
Peachland 06:45:27 -43.4 Dark Up 29.1 159.5 Low 06:35:12 - 06:55:43 4584
Summerland 06:45:27 -43.5 Dark Up 29.2 159.6 Low 06:35:12 - 06:55:43 4577
Penticton 06:45:27 -43.6 Dark Up 29.3 159.7 Low 06:35:12 - 06:55:43 4576
Oliver 06:45:27 -43.9 Dark Up 29.6 159.6 Low 06:35:12 - 06:55:43 4553
Anarchist Mountain Observatory 06:45:27 -44.1 Dark Up 29.9 159.8 Low 06:35:11 - 06:55:42 4548
Tonasket 06:45:26 -44.4 Dark Up 30.1 159.6 Up 06:35:11 - 06:55:42 4525
Okanogan 06:45:28 -44.6 Dark Up 30.4 159.4 Up 06:35:13 - 06:55:44 4499
Brewster 06:45:28 -44.8 Dark Up 30.6 159.1 Up 06:35:13 - 06:55:44 4476
Manson/Chelan 06:45:29 -44.9 Dark Up 30.7 158.7 Up 06:35:14 - 06:55:45 4451
Entiat 06:45:29 -45.0 Dark Up 30.9 158.5 Up 06:35:13 - 06:55:44 4434
Wenatchee 06:45:29 -45.2 Dark Up 31.1 158.4 Up 06:35:14 - 06:55:45 4415
Victoria 06:45:38 -43.1 Dark Up 29.3 155.3 Low 06:35:22 - 06:55:53 4401
Ellensburg 06:45:30 -45.5 Dark Up 31.4 158.0 Up 06:35:14 - 06:55:45 4380
Niwot 06:44:44 -56.0 Dark Up 40.7 175.2 Up 06:34:28 - 06:54:59 4375
Pasco 06:45:26 -46.6 Dark Up 32.5 159.5 Up 06:35:11 - 06:55:42 4371
SwRI 06:44:44 -56.1 Dark Up 40.8 175.1 Up 06:34:29 - 06:55:00 4364
PNWRO 06:45:26 -46.9 Dark Up 32.8 159.7 Up 06:35:10 - 06:55:41 4361
Yakima 06:45:31 -45.8 Dark Up 31.8 157.9 Up 06:35:15 - 06:55:46 4352
Toppenish/White Swan 06:45:29 -46.1 Dark Up 32.1 158.1 Up 06:35:14 - 06:55:45 4342
Goldendale 06:45:30 -46.4 Dark Up 32.5 157.5 Up 06:35:14 - 06:55:45 4292
The Dalles 06:45:33 -46.4 Dark Up 32.6 157.0 Up 06:35:17 - 06:55:48 4264
Maupin 06:45:31 -46.8 Dark Up 33.0 157.0 Up 06:35:16 - 06:55:47 4238
Redmond 06:45:32 -47.5 Dark Up 33.8 156.7 Up 06:35:17 - 06:55:48 4172
Sisters 06:45:33 -47.3 Dark Up 33.7 156.2 Up 06:35:18 - 06:55:49 4161
Bend 06:45:32 -47.6 Dark Up 34.0 156.5 Up 06:35:17 - 06:55:48 4152
Oregon Observatory 06:45:32 -47.7 Dark Up 34.1 156.3 Up 06:35:17 - 06:55:48 4136
La Pine/Gilchrist 06:45:33 -47.9 Dark Up 34.2 156.1 Up 06:35:18 - 06:55:49 4119
North Lake 06:45:32 -48.5 Dark Up 34.8 156.7 Up 06:35:16 - 06:55:47 4106
Paisley 06:45:31 -49.1 Dark Up 35.4 157.0 Up 06:35:15 - 06:55:46 4077
Lakeview 06:45:29 -49.6 Dark Up 35.9 157.0 Up 06:35:14 - 06:55:45 4045
Klamath Falls 06:45:33 -48.9 Dark Up 35.5 155.4 Up 06:35:18 - 06:55:49 4003
Cedarville 06:45:30 -50.2 Dark Up 36.6 157.1 Up 06:35:14 - 06:55:45 4002
Fall River/Burney 06:45:33 -50.0 Dark Up 36.7 155.5 Up 06:35:17 - 06:55:48 3926
Susanville 06:45:30 -50.9 Dark Up 37.5 156.2 Up 06:35:15 - 06:55:46 3902
Gimple 06:45:31 -51.0 Dark Up 37.7 155.8 Up 06:35:15 - 06:55:46 3874
Greenville 06:45:32 -51.0 Dark Up 37.6 155.7 Up 06:35:16 - 06:55:47 3872
Reno 06:45:28 -51.9 Dark Up 38.5 156.9 Up 06:35:12 - 06:55:43 3863
Portola 06:45:30 -51.4 Dark Up 38.1 156.2 Up 06:35:14 - 06:55:45 3862
Quincy 06:45:31 -51.1 Dark Up 37.8 155.7 Up 06:35:16 - 06:55:47 3856
Yerington 06:45:26 -52.7 Dark Up 39.2 157.5 Up 06:35:11 - 06:55:42 3842
Carson City 06:45:28 -52.2 Dark Up 38.9 156.8 Up 06:35:12 - 06:55:43 3836
Tonopah 06:45:19 -54.3 Dark Up 40.7 159.6 Up 06:35:04 - 06:55:35 3835
Hawthorne 06:45:25 -53.3 Dark Up 39.8 158.0 Up 06:35:09 - 06:55:40 3824
Gardnerville 06:45:27 -52.5 Dark Up 39.1 156.8 Up 06:35:11 - 06:55:42 3819
Indian Springs 06:45:14 -56.2 Dark Up 42.5 161.0 Up 06:34:59 - 06:55:30 3770
Lee Vining 06:45:26 -53.5 Dark Up 40.2 157.2 Up 06:35:10 - 06:55:41 3764
Beatty 06:45:17 -55.5 Dark Up 41.9 159.8 Up 06:35:02 - 06:55:33 3759
Henderson 06:45:12 -56.9 Dark Up 43.1 161.8 Up 06:34:56 - 06:55:27 3752
DCO 06:45:06 -58.5 Dark Up 44.5 163.9 Up 06:34:51 - 06:55:22 3741
Bishop 06:45:22 -54.3 Dark Up 41.0 157.9 Up 06:35:07 - 06:55:38 3741
Patrick 06:45:08 -57.9 Dark Up 44.0 163.1 Up 06:34:53 - 06:55:24 3741
Kingman/Dolan Springs 06:45:08 -58.1 Dark Up 44.2 162.7 Up 06:34:53 - 06:55:24 3716
Searchlight/Boulder City 06:45:11 -57.5 Dark Up 43.7 161.7 Up 06:34:56 - 06:55:27 3709
Laughlin/Bullhead City 06:45:11 -57.9 Dark Up 44.1 162.1 Up 06:34:55 - 06:55:26 3696
Mohave Valley 06:45:10 -58.1 Dark Up 44.3 162.0 Up 06:34:54 - 06:55:25 3675
George/Scottsdale 06:45:00 -60.2 Dark Up 46.1 165.3 Up 06:34:45 - 06:55:16 3675
Lake Havasu City 06:45:10 -58.5 Dark Up 44.8 162.2 Up 06:34:54 - 06:55:25 3652
Parker 06:45:08 -58.9 Dark Up 45.1 162.1 Up 06:34:53 - 06:55:24 3624
Blythe 06:45:09 -59.2 Dark Up 45.5 161.5 Up 06:34:53 - 06:55:24 3571
Idyllwild 06:45:16 -58.1 Dark Up 44.8 158.8 Up 06:35:01 - 06:55:32 3507
Calipatria 06:45:12 -59.1 Dark Up 45.7 160.1 Up 06:34:56 - 06:55:27 3498
CPSLO 06:45:29 -54.8 Dark Up 42.1 154.4 Up 06:35:13 - 06:55:44 3497
Yuma 06:45:08 -59.9 Dark Up 46.4 161.2 Up 06:34:53 - 06:55:24 3494
Wildwood 06:45:23 -56.9 Dark Up 43.9 156.5 Up 06:35:07 - 06:55:38 3470

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 15BQ518, (2021/03/03 06:43UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:22.0 +11:58:02  1.3 22.83  66
Alphard        09:27:35.2 -08:39:30  2.0 18.82  72
PPM 193828     10:49:43.5 -09:51:10  5.5  1.65  52
PPM 193705     10:42:27.3 -08:43:38  7.1  0.50  53
PPM 193719     10:43:14.0 -09:04:50  9.3  0.14  53
15BQ518        10:43:47.0 -09:05:59 13.9        53
Positions are for J2000

Event circumstances last updated at 2020/03/12 21:07:43 UT

Marc W. Buie, Southwest Research Institute

RECON