RECON: TNO occultation with 202421

Event between (202421) 05UQ513 and star GA1220:00146057 with event index number of 344654

Geocentric closest approach at 2019/11/23 04:05:04 UTC

J2000 position of star is 00:49:53.4 +33:23:03
Equinox of date position of star is 00:50:55.7 +33:29:16
Stellar brightness G=16.0, use SENSEUP=128
Star is 147 degrees from the moon. Moon is 16% illuminated.
TNO apparent brightness V=20.4

[RECON map]
TNO is 48.0 AU from the Sun and 47.2 AU from the Earth.
The TNO is moving 21.7 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 136 seconds.
The 1-sigma cross-track error in the shadow position is 2633 km.
The sky-plane scale is 34249.1 km/arcsec.

The TNO has an absolute magnitude Hv=3.5
Diameter=1202.3 km assuming a 5% albedo -- 55.3 sec chord
Diameter=490.8 km assuming a 30% albedo -- 22.6 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 202421, (2019/11/23 04:05UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:06.6 +45:21:08  1.3 48.26 108
57Gam1And      02:05:07.8 +42:25:27  2.3 17.07 136
69Sig Psc      01:03:54.8 +31:54:38  5.4  3.15 149
PPM 065690     00:52:15.7 +33:39:58  8.2  0.32 147
PPM 065661     00:50:55.1 +33:24:12  9.5  0.09 148
202421         00:50:58.4 +33:29:32 16.0       147
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 14.5 km RECON observability=1.0 and success probability=2.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Summerland 04:04:24 -37.6 Dark Down 72.2 153.9 Up 03:52:36 - 04:16:13 -6197
Kelowna 04:04:24 -37.8 Dark Down 72.2 154.9 Up 03:52:35 - 04:16:12 -6213
Penticton 04:04:25 -37.8 Dark Down 72.5 154.0 Up 03:52:36 - 04:16:13 -6228
Okanagan Falls 04:04:26 -37.8 Dark Down 72.7 153.7 Up 03:52:37 - 04:16:14 -6240
Oliver 04:04:27 -37.9 Dark Down 72.8 153.5 Up 03:52:38 - 04:16:15 -6252
Anarchist Mountain Observatory 04:04:27 -38.0 Dark Down 73.0 153.8 Up 03:52:39 - 04:16:16 -6274
Oroville 04:04:27 -38.0 Dark Down 73.1 153.5 Up 03:52:38 - 04:16:15 -6275
Tonasket 04:04:28 -38.1 Dark Down 73.3 153.2 Up 03:52:40 - 04:16:17 -6290
Manson/Chelan 04:04:32 -37.8 Dark Down 73.8 149.9 Up 03:52:44 - 04:16:21 -6305
Okanogan 04:04:29 -38.0 Dark Down 73.5 152.2 Up 03:52:41 - 04:16:18 -6305
Brewster 04:04:31 -38.0 Dark Down 73.7 151.3 Up 03:52:43 - 04:16:20 -6311
Entiat 04:04:33 -37.8 Dark Down 74.0 149.4 Up 03:52:45 - 04:16:22 -6315
Wenatchee 04:04:34 -37.8 Dark Down 74.1 148.6 Up 03:52:46 - 04:16:23 -6326
Ellensburg 04:04:37 -37.7 Dark Down 74.4 147.3 Up 03:52:48 - 04:16:25 -6341
Yakima 04:04:39 -37.8 Dark Down 74.8 146.4 Up 03:52:50 - 04:16:27 -6368
Toppenish/White Swan 04:04:39 -37.9 Dark Down 75.0 146.5 Up 03:52:50 - 04:16:27 -6392
The Dalles 04:04:44 -37.5 Dark Down 75.3 142.6 Up 03:52:55 - 04:16:32 -6397
Goldendale 04:04:42 -37.7 Dark Down 75.3 144.1 Up 03:52:53 - 04:16:30 -6404
Maupin 04:04:44 -37.7 Dark Down 75.7 141.9 Up 03:52:56 - 04:16:33 -6432
Sisters 04:04:50 -37.5 Dark Down 76.2 138.3 Up 03:53:01 - 04:16:38 -6461
Madras/Culver 04:04:47 -37.7 Dark Down 76.1 140.4 Up 03:52:59 - 04:16:36 -6466
Pasco 04:04:36 -38.8 Dark Down 75.6 150.0 Up 03:52:48 - 04:16:25 -6474
George/Umatilla 04:04:38 -38.7 Dark Down 75.8 148.7 Up 03:52:50 - 04:16:27 -6484
Redmond 04:04:48 -37.8 Dark Down 76.4 139.4 Up 03:53:00 - 04:16:37 -6487
Bend 04:04:50 -37.7 Dark Down 76.5 138.4 Up 03:53:01 - 04:16:38 -6493
Oregon Observatory 04:04:51 -37.6 Dark Down 76.5 137.5 Up 03:53:02 - 04:16:39 -6496
PNWRO 04:04:37 -39.0 Dark Down 75.9 150.2 Up 03:52:48 - 04:16:25 -6504
La Pine/Gilchrist 04:04:52 -37.6 Dark Down 76.6 136.8 Up 03:53:03 - 04:16:40 -6507
Chiloquin 04:04:57 -37.5 Dark Down 77.3 132.4 Up 03:53:08 - 04:16:45 -6559
North Lake 04:04:53 -38.1 Dark Down 77.3 137.3 Up 03:53:04 - 04:16:41 -6573
Klamath Falls 04:04:59 -37.6 Dark Down 77.5 131.5 Up 03:53:10 - 04:16:47 -6588
Tulelake 04:04:58 -37.9 Dark Down 77.9 131.5 Up 03:53:10 - 04:16:47 -6625
Paisley 04:04:53 -38.4 Dark Down 77.9 136.7 Up 03:53:05 - 04:16:42 -6633
Lakeview 04:04:55 -38.7 Dark Down 78.3 135.7 Up 03:53:06 - 04:16:43 -6680
Fall River/Burney 04:05:02 -38.0 Dark Down 78.5 128.4 Up 03:53:14 - 04:16:51 -6692
Cedarville 04:04:57 -38.9 Dark Down 78.9 134.0 Up 03:53:09 - 04:16:46 -6737
Susanville 04:05:02 -38.6 Dark Down 79.4 128.2 Up 03:53:13 - 04:16:50 -6784
Greenville 04:05:04 -38.5 Dark Down 79.3 126.1 Up 03:53:16 - 04:16:53 -6784
Gimple 04:05:04 -38.5 Dark Down 79.4 126.3 Up 03:53:15 - 04:16:52 -6789
Quincy 04:05:05 -38.5 Dark Down 79.5 125.2 Up 03:53:17 - 04:16:54 -6798
Portola 04:05:04 -38.9 Dark Down 79.8 126.1 Up 03:53:16 - 04:16:53 -6838
Reno 04:05:04 -39.4 Dark Down 80.4 127.0 Up 03:53:15 - 04:16:52 -6898
Carson City 04:05:05 -39.4 Dark Down 80.6 125.4 Up 03:53:16 - 04:16:53 -6925
Gardnerville 04:05:06 -39.5 Dark Down 80.8 124.4 Up 03:53:17 - 04:16:54 -6946
Yerington 04:05:04 -39.9 Dark Down 81.1 126.6 Up 03:53:15 - 04:16:52 -6980
Hawthorne 04:05:04 -40.4 Dark Down 81.7 126.1 Up 03:53:16 - 04:16:53 -7048
Lee Vining 04:05:09 -40.1 Dark Down 81.7 121.1 Up 03:53:20 - 04:16:57 -7057
CPSLO 04:05:22 -39.0 Dark Down 81.6 100.3 Up 03:53:33 - 04:17:10 -7143
Bishop 04:05:08 -40.7 Dark Down 82.5 120.0 Up 03:53:19 - 04:16:56 -7148
Tonopah 04:05:03 -41.5 Dark Down 82.9 129.3 Up 03:53:15 - 04:16:52 -7174
Lone Pine 04:05:10 -41.0 Dark Down 83.1 115.8 Up 03:53:22 - 04:16:59 -7225
Beatty 04:05:06 -42.0 Dark Down 83.9 123.4 Up 03:53:17 - 04:16:54 -7290
Wildwood 04:05:21 -40.8 Dark Down 83.4 94.0 Up 03:53:33 - 04:17:10 -7372
Indian Springs 04:05:04 -42.9 Dark Down 84.8 126.3 Up 03:53:16 - 04:16:53 -7385
Henderson 04:05:04 -43.5 Dark Down 85.6 125.4 Up 03:53:15 - 04:16:52 -7471
Searchlight/Boulder City 04:05:06 -43.6 Dark Down 85.9 119.4 Up 03:53:17 - 04:16:54 -7518
Idyllwild 04:05:17 -42.3 Dark Down 85.0 92.3 Up 03:53:28 - 04:17:05 -7528
Laughlin/Bullhead City 04:05:06 -43.9 Dark Down 86.3 117.7 Up 03:53:17 - 04:16:54 -7564
Mohave Valley 04:05:07 -44.0 Dark Down 86.4 113.9 Up 03:53:19 - 04:16:56 -7585
Patrick 04:05:03 -44.5 Dark Down 86.7 126.4 Up 03:53:14 - 04:16:51 -7592
Kingman/Dolan Springs 04:05:04 -44.4 Dark Down 86.7 121.7 Up 03:53:16 - 04:16:53 -7596
Lake Havasu City 04:05:09 -44.2 Dark Down 86.8 109.1 Up 03:53:20 - 04:16:57 -7632
Calipatria 04:05:16 -43.3 Dark Down 86.0 85.0 Up 03:53:27 - 04:17:04 -7655
Parker 04:05:09 -44.3 Dark Down 86.9 103.1 Up 03:53:21 - 04:16:58 -7661
DCO 04:05:02 -45.1 Dark Down 87.3 128.9 Up 03:53:13 - 04:16:50 -7662
Blythe 04:05:12 -44.1 Dark Down 86.7 93.0 Up 03:53:23 - 04:17:00 -7681
Niwot 04:04:22 -50.2 Dark Down 82.0 213.9 Up 03:52:34 - 04:16:11 -7747
Yuma 04:05:15 -44.1 Dark Down 86.6 77.1 Up 03:53:26 - 04:17:03 -7749
SwRI 04:04:23 -50.1 Dark Down 82.2 213.8 Up 03:52:34 - 04:16:11 -7750

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 202421, (2019/11/23 04:05UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 48.26 108
57Gam1And      02:03:54.0 +42:19:46  2.3 17.07 136
69Sig Psc      01:02:49.1 +31:48:15  5.4  3.15 149
PPM 065690     00:51:10.5 +33:33:29  8.2  0.32 147
PPM 065661     00:49:50.1 +33:17:42  9.5  0.09 148
202421         00:49:53.4 +33:23:03 16.0       147
Positions are for J2000

Event circumstances last updated at 2019/01/30 20:36:50 UT

Marc W. Buie, Southwest Research Institute

RECON