RECON: TNO occultation with 523713

Event between (523713) 14JX80 and star GA0920:05182494 with event index number of 1098755

Geocentric closest approach at 2021/03/31 09:37:37 UTC

J2000 position of star is 17:30:55.5 +03:19:31
Equinox of date position of star is 17:31:53.7 +03:18:42
Stellar brightness G=15.9, use SENSEUP=128
Star is 41 degrees from the moon. Moon is 90% illuminated.
TNO apparent brightness V=21.9

[RECON map]
TNO is 36.2 AU from the Sun and 35.9 AU from the Earth.
The TNO is moving 14.3 km/sec on the sky relative to the star, or, 2.0 arcsec/hr.
The 1-sigma error in the time of the event is 100 seconds.
The 1-sigma cross-track error in the shadow position is 2415 km.
The sky-plane scale is 26044.3 km/arcsec.

The TNO has an absolute magnitude Hv=6.2
Diameter=346.7 km assuming a 5% albedo -- 24.3 sec chord
Diameter=141.6 km assuming a 30% albedo -- 9.9 sec chord
Dynamical classification is 5:2EEE+5:2EII
 
 
 
 
 
 

Star training set for 523713, (2021/03/31 09:38UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:42.8 -26:28:38  0.9 33.27  23
60Bet Oph      17:44:31.4 +04:33:36  2.8  3.37  44
PPM 164135     17:32:25.4 +02:42:38  6.5  0.61  41
PPM 164079     17:30:34.9 +02:59:31  8.4  0.47  41
PPM 164132     17:32:14.9 +03:34:39  9.2  0.27  41
523713         17:31:59.2 +03:18:38 15.9        41
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 12.5 km RECON observability=1.0 and success probability=13.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Niwot 09:42:38 -32.7 Dark Up 42.5 132.0 Up 09:33:50 - 09:51:26 -807
SwRI 09:42:38 -32.8 Dark Up 42.5 131.9 Up 09:33:50 - 09:51:26 -820
Kelowna 09:43:40 -31.5 Dark Up 28.8 123.3 Low 09:34:52 - 09:52:28 -978
Penticton 09:43:39 -31.9 Dark Up 28.9 123.0 Low 09:34:51 - 09:52:27 -1013
Summerland 09:43:40 -31.8 Dark Up 28.8 122.9 Low 09:34:52 - 09:52:28 -1013
Okanagan Falls 09:43:38 -32.0 Dark Up 29.0 122.9 Low 09:34:50 - 09:52:26 -1029
Oliver 09:43:39 -32.2 Dark Up 29.1 122.8 Low 09:34:51 - 09:52:27 -1040
Anarchist Mountain Observatory 09:43:35 -32.2 Dark Up 29.3 122.9 Low 09:34:47 - 09:52:23 -1044
Oroville 09:43:37 -32.3 Dark Up 29.3 122.8 Low 09:34:49 - 09:52:25 -1054
Tonasket 09:43:35 -32.5 Dark Up 29.4 122.7 Low 09:34:47 - 09:52:23 -1071
Okanogan 09:43:35 -32.9 Dark Up 29.5 122.4 Low 09:34:47 - 09:52:23 -1104
Brewster 09:43:32 -33.2 Dark Up 29.5 122.0 Low 09:34:44 - 09:52:20 -1134
Manson/Chelan 09:43:32 -33.5 Dark Up 29.4 121.6 Low 09:34:44 - 09:52:20 -1168
Entiat 09:43:32 -33.7 Dark Up 29.5 121.4 Low 09:34:44 - 09:52:20 -1188
Wenatchee 09:43:30 -34.0 Dark Up 29.5 121.2 Low 09:34:42 - 09:52:18 -1212
Pasco 09:43:24 -34.5 Dark Up 30.8 121.7 Up 09:34:36 - 09:52:12 -1239
PNWRO 09:43:23 -34.7 Dark Up 31.1 121.8 Up 09:34:35 - 09:52:11 -1246
Ellensburg 09:43:30 -34.4 Dark Up 29.6 120.8 Low 09:34:42 - 09:52:18 -1254
George/Umatilla 09:43:22 -34.9 Dark Up 30.9 121.3 Up 09:34:34 - 09:52:10 -1275
Yakima 09:43:27 -34.8 Dark Up 29.8 120.6 Low 09:34:39 - 09:52:15 -1285
Toppenish/White Swan 09:43:25 -34.9 Dark Up 30.0 120.6 Up 09:34:37 - 09:52:13 -1294
Goldendale 09:43:23 -35.5 Dark Up 30.0 119.9 Up 09:34:35 - 09:52:11 -1356
The Dalles 09:43:24 -35.8 Dark Up 29.9 119.5 Low 09:34:36 - 09:52:12 -1391
Maupin 09:43:19 -36.2 Dark Up 30.2 119.4 Up 09:34:31 - 09:52:07 -1418
Madras/Culver 09:43:19 -36.7 Dark Up 30.4 119.0 Up 09:34:31 - 09:52:07 -1461
Redmond 09:43:17 -37.0 Dark Up 30.6 118.8 Up 09:34:29 - 09:52:05 -1490
Sisters 09:43:17 -37.1 Dark Up 30.3 118.5 Up 09:34:29 - 09:52:05 -1508
Bend 09:43:17 -37.2 Dark Up 30.6 118.6 Up 09:34:29 - 09:52:05 -1513
Oregon Observatory 09:43:14 -37.4 Dark Up 30.6 118.3 Up 09:34:26 - 09:52:02 -1532
La Pine/Gilchrist 09:43:15 -37.6 Dark Up 30.6 118.2 Up 09:34:27 - 09:52:03 -1551
North Lake 09:43:12 -37.8 Dark Up 31.2 118.5 Up 09:34:24 - 09:52:00 -1552
Paisley 09:43:09 -38.1 Dark Up 31.7 118.5 Up 09:34:21 - 09:51:57 -1574
Lakeview 09:43:06 -38.5 Dark Up 32.1 118.4 Up 09:34:18 - 09:51:54 -1600
Cedarville 09:43:02 -39.0 Dark Up 32.5 118.2 Up 09:34:14 - 09:51:50 -1638
DCO 09:42:19 -40.8 Dark Up 40.3 120.2 Up 09:33:31 - 09:51:07 -1645
Chiloquin 09:43:10 -38.7 Dark Up 30.9 117.3 Up 09:34:22 - 09:51:58 -1651
Klamath Falls 09:43:08 -39.0 Dark Up 31.1 117.1 Up 09:34:20 - 09:51:56 -1672
Patrick 09:42:23 -40.9 Dark Up 39.7 119.8 Up 09:33:35 - 09:51:11 -1672
Tulelake 09:43:05 -39.1 Dark Up 31.4 117.3 Up 09:34:17 - 09:51:53 -1676
Kingman/Dolan Springs 09:42:23 -41.2 Dark Up 39.6 119.5 Up 09:33:35 - 09:51:11 -1698
Henderson 09:42:27 -41.1 Dark Up 38.6 119.2 Up 09:33:39 - 09:51:15 -1705
Tonopah 09:42:41 -40.6 Dark Up 36.1 118.6 Up 09:33:53 - 09:51:29 -1711
Indian Springs 09:42:31 -41.0 Dark Up 37.8 119.0 Up 09:33:43 - 09:51:19 -1714
Laughlin/Bullhead City 09:42:22 -41.5 Dark Up 39.3 119.0 Up 09:33:34 - 09:51:10 -1734
Searchlight/Boulder City 09:42:25 -41.5 Dark Up 38.9 118.9 Up 09:33:37 - 09:51:13 -1737
Fall River/Burney 09:43:00 -39.9 Dark Up 31.9 116.8 Up 09:34:12 - 09:51:48 -1738
Susanville 09:42:58 -40.1 Dark Up 32.7 117.1 Up 09:34:10 - 09:51:46 -1744
Mohave Valley 09:42:19 -41.7 Dark Up 39.4 118.8 Up 09:33:31 - 09:51:07 -1750
Lake Havasu City 09:42:19 -41.9 Dark Up 39.8 118.7 Up 09:33:31 - 09:51:07 -1759
Reno 09:42:52 -40.5 Dark Up 33.6 117.3 Up 09:34:04 - 09:51:40 -1759
Beatty 09:42:35 -41.3 Dark Up 36.9 118.3 Up 09:33:47 - 09:51:23 -1760
Yerington 09:42:49 -40.7 Dark Up 34.3 117.5 Up 09:34:01 - 09:51:37 -1761
Hawthorne 09:42:46 -40.9 Dark Up 34.9 117.7 Up 09:33:58 - 09:51:34 -1762
Gimple 09:42:56 -40.5 Dark Up 32.6 116.7 Up 09:34:08 - 09:51:44 -1775
Portola 09:42:55 -40.6 Dark Up 33.1 116.9 Up 09:34:07 - 09:51:43 -1776
Parker 09:42:16 -42.1 Dark Up 39.9 118.5 Up 09:33:28 - 09:51:04 -1778
Greenville 09:42:57 -40.5 Dark Up 32.6 116.7 Up 09:34:09 - 09:51:45 -1779
Carson City 09:42:51 -40.8 Dark Up 33.8 117.1 Up 09:34:03 - 09:51:39 -1783
Quincy 09:42:55 -40.7 Dark Up 32.7 116.6 Up 09:34:07 - 09:51:43 -1793
Gardnerville 09:42:48 -41.0 Dark Up 33.9 117.0 Up 09:34:00 - 09:51:36 -1797
Bishop 09:42:37 -41.7 Dark Up 35.6 117.1 Up 09:33:49 - 09:51:25 -1827
Lee Vining 09:42:43 -41.5 Dark Up 34.8 116.9 Up 09:33:55 - 09:51:31 -1829
Blythe 09:42:13 -42.7 Dark Up 40.0 117.8 Up 09:33:25 - 09:51:01 -1830
Lone Pine 09:42:35 -42.2 Dark Up 36.1 116.9 Up 09:33:47 - 09:51:23 -1858
Yuma 09:42:08 -43.4 Dark Up 40.3 117.1 Up 09:33:20 - 09:50:56 -1888
Calipatria 09:42:11 -43.6 Dark Up 39.5 116.6 Up 09:33:23 - 09:50:59 -1921
Idyllwild 09:42:17 -43.8 Dark Up 38.4 116.1 Up 09:33:29 - 09:51:05 -1959
Wildwood 09:42:19 -44.5 Dark Up 36.8 114.8 Up 09:33:31 - 09:51:07 -2053
CPSLO 09:42:30 -44.5 Dark Up 34.8 113.9 Up 09:33:42 - 09:51:18 -2096

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 523713, (2021/03/31 09:38UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 33.27  23
60Bet Oph      17:43:28.3 +04:34:05  2.8  3.37  44
PPM 164135     17:31:21.4 +02:43:30  6.5  0.61  41
PPM 164079     17:29:31.0 +03:00:27  8.4  0.47  41
PPM 164132     17:31:11.3 +03:35:31  9.2  0.27  41
523713         17:30:55.5 +03:19:31 15.9        41
Positions are for J2000

Event circumstances last updated at 2019/05/31 22:33:37 UT

Marc W. Buie, Southwest Research Institute

RECON