RECON: TNO occultation with 202421

Event between (202421) 05UQ513 and star GA1220:00154686 with event index number of 344653

Geocentric closest approach at 2019/10/09 11:35:26 UTC

J2000 position of star is 00:53:03.2 +33:47:07
Equinox of date position of star is 00:54:05.8 +33:53:19
Stellar brightness G=12.5, use SENSEUP=16
Star is 64 degrees from the moon. Moon is 83% illuminated.
TNO apparent brightness V=20.3

[RECON map]
TNO is 48.0 AU from the Sun and 47.1 AU from the Earth.
The TNO is moving 25.5 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 121 seconds.
The 1-sigma cross-track error in the shadow position is 2462 km.
The sky-plane scale is 34145.1 km/arcsec.

The TNO has an absolute magnitude Hv=3.5
Diameter=1202.3 km assuming a 5% albedo -- 47.2 sec chord
Diameter=490.8 km assuming a 30% albedo -- 19.3 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 202421, (2019/10/09 11:35UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:06.4 +45:21:06  1.3 48.59  64
57Gam1And      02:05:07.3 +42:25:25  2.3 16.31  80
69Sig Psc      01:03:54.4 +31:54:36  5.4  2.85  64
PPM 065732     00:54:24.3 +34:01:52  8.4  0.15  64
202421         00:54:08.1 +33:53:33 12.5        64
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 21.7 km RECON observability=1.0 and success probability=17.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 11:32:39 -25.6 Dark Down 45.0 272.0 Up 11:22:05 - 11:43:13 2531
Summerland 11:32:40 -25.9 Dark Down 45.2 271.7 Up 11:22:06 - 11:43:14 2519
Penticton 11:32:39 -25.9 Dark Down 45.1 272.2 Up 11:22:05 - 11:43:13 2490
Okanagan Falls 11:32:39 -26.0 Dark Down 45.1 272.4 Up 11:22:05 - 11:43:13 2470
Oliver 11:32:39 -26.0 Dark Down 45.0 272.6 Up 11:22:05 - 11:43:13 2453
Anarchist Mountain Observatory 11:32:38 -26.0 Dark Down 44.9 272.9 Up 11:22:04 - 11:43:12 2439
Oroville 11:32:38 -26.0 Dark Down 45.0 272.9 Up 11:22:04 - 11:43:12 2429
Tonasket 11:32:37 -26.1 Dark Down 44.9 273.1 Up 11:22:03 - 11:43:11 2405
Okanogan 11:32:37 -26.3 Dark Down 45.0 273.3 Up 11:22:03 - 11:43:11 2367
Brewster 11:32:37 -26.6 Dark Down 45.1 273.5 Up 11:22:03 - 11:43:11 2334
Manson/Chelan 11:32:38 -26.9 Dark Down 45.4 273.4 Up 11:22:04 - 11:43:12 2305
Entiat 11:32:38 -27.0 Dark Down 45.4 273.6 Up 11:22:04 - 11:43:12 2281
Wenatchee 11:32:38 -27.1 Dark Down 45.5 273.8 Up 11:22:04 - 11:43:12 2252
Ellensburg 11:32:38 -27.4 Dark Down 45.6 274.1 Up 11:22:04 - 11:43:12 2204
Yakima 11:32:37 -27.6 Dark Down 45.6 274.5 Up 11:22:03 - 11:43:11 2161
Pasco 11:32:33 -26.8 Dark Down 44.5 275.7 Up 11:21:59 - 11:43:07 2154
Toppenish/White Swan 11:32:36 -27.6 Dark Down 45.4 274.8 Up 11:22:02 - 11:43:10 2141
PNWRO 11:32:33 -26.8 Dark Down 44.4 276.1 Up 11:21:59 - 11:43:07 2133
George/Umatilla 11:32:33 -27.1 Dark Down 44.7 275.9 Up 11:21:59 - 11:43:07 2114
Goldendale 11:32:36 -28.1 Dark Down 45.7 275.1 Up 11:22:02 - 11:43:10 2074
The Dalles 11:32:37 -28.4 Dark Down 45.9 275.1 Up 11:22:03 - 11:43:11 2043
Maupin 11:32:36 -28.5 Dark Down 45.8 275.6 Up 11:22:02 - 11:43:10 2001
Madras/Culver 11:32:36 -28.7 Dark Down 45.8 276.1 Up 11:22:02 - 11:43:10 1942
Redmond 11:32:35 -28.9 Dark Down 45.8 276.4 Up 11:22:01 - 11:43:09 1903
Sisters 11:32:36 -29.1 Dark Down 46.1 276.2 Up 11:22:02 - 11:43:10 1897
Niwot 11:32:00 -18.5 Dark Down 33.4 288.4 Up 11:21:26 - 11:42:34 1894
SwRI 11:32:00 -18.6 Dark Down 33.5 288.4 Up 11:21:26 - 11:42:34 1881
Bend 11:32:35 -29.0 Dark Down 45.8 276.6 Up 11:22:01 - 11:43:09 1877
Oregon Observatory 11:32:35 -29.2 Dark Down 45.9 276.7 Up 11:22:01 - 11:43:09 1856
La Pine/Gilchrist 11:32:35 -29.3 Dark Down 45.9 276.8 Up 11:22:01 - 11:43:09 1833
North Lake 11:32:33 -29.1 Dark Down 45.5 277.6 Up 11:21:59 - 11:43:07 1798
Paisley 11:32:32 -29.0 Dark Down 45.1 278.4 Up 11:21:58 - 11:43:06 1747
Chiloquin 11:32:35 -29.9 Dark Down 46.1 277.8 Up 11:22:01 - 11:43:09 1707
Lakeview 11:32:31 -29.0 Dark Down 44.9 279.0 Up 11:21:57 - 11:43:05 1697
Klamath Falls 11:32:34 -30.0 Dark Down 46.0 278.2 Up 11:22:00 - 11:43:08 1672
Tulelake 11:32:33 -29.9 Dark Down 45.7 278.6 Up 11:21:59 - 11:43:07 1649
Cedarville 11:32:30 -29.1 Dark Down 44.7 279.7 Up 11:21:56 - 11:43:04 1630
Fall River/Burney 11:32:32 -30.2 Dark Down 45.5 279.6 Up 11:21:58 - 11:43:06 1553
Susanville 11:32:30 -29.8 Dark Down 44.8 280.6 Up 11:21:56 - 11:43:04 1501
Gimple 11:32:30 -30.1 Dark Down 44.9 280.7 Up 11:21:56 - 11:43:04 1466
Greenville 11:32:31 -30.1 Dark Down 45.0 280.7 Up 11:21:57 - 11:43:05 1465
Quincy 11:32:30 -30.2 Dark Down 45.0 280.9 Up 11:21:56 - 11:43:04 1443
Portola 11:32:29 -29.9 Dark Down 44.6 281.2 Up 11:21:55 - 11:43:03 1440
Reno 11:32:27 -29.5 Dark Down 44.0 281.8 Up 11:21:53 - 11:43:01 1425
Carson City 11:32:27 -29.6 Dark Down 44.0 282.2 Up 11:21:53 - 11:43:01 1387
Yerington 11:32:25 -29.2 Dark Down 43.4 282.6 Up 11:21:51 - 11:42:59 1381
Gardnerville 11:32:27 -29.7 Dark Down 43.9 282.4 Up 11:21:53 - 11:43:01 1362
Hawthorne 11:32:24 -28.9 Dark Down 42.9 283.3 Up 11:21:50 - 11:42:58 1344
Tonopah 11:32:20 -28.0 Dark Down 41.8 284.3 Up 11:21:46 - 11:42:54 1328
Lee Vining 11:32:24 -29.5 Dark Down 43.2 283.6 Up 11:21:50 - 11:42:58 1272
Bishop 11:32:22 -29.1 Dark Down 42.5 284.4 Up 11:21:48 - 11:42:56 1225
Beatty 11:32:18 -28.0 Dark Down 41.1 285.5 Up 11:21:44 - 11:42:52 1217
Indian Springs 11:32:15 -27.2 Dark Down 40.2 286.2 Up 11:21:41 - 11:42:49 1210
Henderson 11:32:13 -26.8 Dark Down 39.5 286.9 Up 11:21:39 - 11:42:47 1172
Lone Pine 11:32:21 -29.0 Dark Down 42.0 285.3 Up 11:21:47 - 11:42:55 1152
Patrick 11:32:11 -26.0 Dark Down 38.5 287.8 Up 11:21:37 - 11:42:45 1138
DCO 11:32:09 -25.5 Dark Down 37.8 288.3 Up 11:21:35 - 11:42:43 1126
Searchlight/Boulder City 11:32:13 -26.9 Dark Down 39.3 287.4 Up 11:21:39 - 11:42:47 1114
Kingman/Dolan Springs 11:32:11 -26.2 Dark Down 38.6 287.9 Up 11:21:37 - 11:42:45 1109
Laughlin/Bullhead City 11:32:12 -26.7 Dark Down 38.9 287.8 Up 11:21:38 - 11:42:46 1092
Mohave Valley 11:32:12 -26.7 Dark Down 38.9 288.0 Up 11:21:38 - 11:42:46 1063
Lake Havasu City 11:32:11 -26.6 Dark Down 38.5 288.4 Up 11:21:37 - 11:42:45 1028
Parker 11:32:10 -26.6 Dark Down 38.4 288.7 Up 11:21:36 - 11:42:44 992
CPSLO 11:32:26 -31.4 Dark Down 43.7 285.4 Up 11:21:52 - 11:43:00 952
Blythe 11:32:11 -27.0 Dark Down 38.5 288.9 Up 11:21:37 - 11:42:45 928
Idyllwild 11:32:15 -28.7 Dark Down 40.2 288.1 Up 11:21:41 - 11:42:49 881
Wildwood 11:32:20 -30.1 Dark Down 41.8 287.2 Up 11:21:46 - 11:42:54 871
Calipatria 11:32:13 -27.8 Dark Down 39.0 289.0 Up 11:21:39 - 11:42:47 849
Yuma 11:32:10 -27.2 Dark Down 38.2 289.6 Up 11:21:36 - 11:42:44 829

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, (2019/10/09 11:35UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 48.59  64
57Gam1And      02:03:54.0 +42:19:46  2.3 16.31  80
69Sig Psc      01:02:49.1 +31:48:15  5.4  2.85  64
PPM 065732     00:53:19.3 +33:55:27  8.4  0.15  64
202421         00:53:03.2 +33:47:07 12.5        64
Positions are for J2000

Event circumstances last updated at 2019/01/29 03:45:24 UT

Marc W. Buie, Southwest Research Institute

RECON