RECON: TNO occultation with 535229

Event between (535229) 14YG50 and star GA1120:02948922 with event index number of 1618386

Geocentric closest approach at 2022/01/06 08:20:12 UTC

J2000 position of star is 08:00:05.0 +22:59:26
Equinox of date position of star is 08:01:14.5 +22:56:10
Stellar brightness G=12.4, use SENSEUP=16
Star is 143 degrees from the moon. Moon is 17% illuminated.
TNO apparent brightness V=22.6

[RECON map]
TNO is 34.9 AU from the Sun and 34.0 AU from the Earth.
The TNO is moving 24.8 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 255 seconds.
The 1-sigma cross-track error in the shadow position is 3808 km.
The sky-plane scale is 24646.2 km/arcsec.

The TNO has an absolute magnitude Hv=7.2
Diameter=218.8 km assuming a 5% albedo -- 8.8 sec chord
Diameter=89.3 km assuming a 30% albedo -- 3.6 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 535229, (2022/01/06 08:20UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:39.7 +27:58:17  1.1  6.04 139
4Ome2Cnc       08:03:03.2 +25:01:38  6.2  2.13 143
PPM 098201     08:01:01.1 +23:07:17  7.9  0.21 143
PPM 098209     08:01:35.0 +23:01:02  9.7  0.10 143
535229         08:01:23.5 +22:55:44 12.4       143
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 3.5 sigma about the mid-time.
The median site spacing is 25.1 km RECON observability=1.0 and success probability=3.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 08:20:53 -62.4 Dark Down 62.3 163.4 Up 08:05:53 - 08:35:53 9888
Summerland 08:20:54 -62.7 Dark Down 62.6 162.7 Up 08:05:54 - 08:35:54 9857
Penticton 08:20:54 -62.7 Dark Down 62.6 162.9 Up 08:05:54 - 08:35:54 9851
Okanagan Falls 08:20:53 -62.9 Dark Down 62.8 162.7 Up 08:05:53 - 08:35:53 9832
Oliver 08:20:54 -63.1 Dark Down 63.0 162.7 Up 08:05:54 - 08:35:54 9816
Anarchist Mountain Observatory 08:20:54 -63.2 Dark Down 63.2 163.0 Up 08:05:54 - 08:35:54 9800
Oroville 08:20:54 -63.3 Dark Down 63.2 162.8 Up 08:05:54 - 08:35:54 9792
Tonasket 08:20:53 -63.6 Dark Down 63.5 162.6 Up 08:05:53 - 08:35:53 9768
Okanogan 08:20:54 -63.9 Dark Down 63.7 162.1 Up 08:05:54 - 08:35:54 9734
Brewster 08:20:54 -64.2 Dark Down 64.0 161.5 Up 08:05:54 - 08:35:54 9705
Manson/Chelan 08:20:55 -64.4 Dark Down 64.1 160.7 Up 08:05:55 - 08:35:55 9682
Wenatchee 08:20:56 -64.9 Dark Down 64.5 160.0 Up 08:05:56 - 08:35:56 9632
Ellensburg 08:20:57 -65.3 Dark Down 64.8 159.2 Up 08:05:57 - 08:35:57 9589
Yakima 08:20:57 -65.7 Dark Down 65.2 158.9 Up 08:05:57 - 08:35:57 9547
Toppenish/White Swan 08:20:56 -65.9 Dark Down 65.4 159.1 Up 08:05:56 - 08:35:56 9526
Pasco 08:20:52 -65.9 Dark Down 65.9 161.7 Up 08:05:52 - 08:35:52 9522
PNWRO 08:20:51 -66.1 Dark Down 66.1 162.0 Up 08:05:51 - 08:35:51 9498
George/Umatilla 08:20:53 -66.3 Dark Down 66.1 161.0 Up 08:05:53 - 08:35:53 9486
Goldendale 08:20:58 -66.5 Dark Down 65.9 157.7 Up 08:05:58 - 08:35:58 9467
The Dalles 08:20:58 -66.8 Dark Down 66.0 156.7 Up 08:05:58 - 08:35:58 9442
Maupin 08:20:56 -67.2 Dark Down 66.4 156.6 Up 08:05:56 - 08:35:56 9399
Madras/Culver 08:20:58 -67.7 Dark Down 66.9 156.0 Up 08:05:58 - 08:35:58 9342
Sisters 08:20:59 -68.1 Dark Down 67.0 154.7 Up 08:05:59 - 08:35:59 9305
Redmond 08:20:58 -68.1 Dark Down 67.2 155.5 Up 08:05:58 - 08:35:58 9305
Bend 08:20:58 -68.3 Dark Down 67.3 155.0 Up 08:05:58 - 08:35:58 9282
Oregon Observatory 08:21:00 -68.5 Dark Down 67.4 154.5 Up 08:06:00 - 08:36:00 9263
La Pine/Gilchrist 08:20:59 -68.7 Dark Down 67.6 154.2 Up 08:05:59 - 08:35:59 9241
North Lake 08:20:57 -69.1 Dark Down 68.2 155.1 Up 08:05:57 - 08:35:57 9199
Paisley 08:20:56 -69.6 Dark Down 68.8 155.4 Up 08:05:56 - 08:35:56 9144
Chiloquin 08:21:00 -69.8 Dark Down 68.5 152.1 Up 08:06:00 - 08:36:00 9123
Lakeview 08:20:56 -70.1 Dark Down 69.3 155.3 Up 08:05:56 - 08:35:56 9092
Klamath Falls 08:21:00 -70.2 Dark Down 68.8 151.9 Up 08:06:00 - 08:36:00 9087
Tulelake 08:20:59 -70.4 Dark Down 69.2 152.3 Up 08:05:59 - 08:35:59 9061
SwRI 08:20:04 -66.6 Dark Down 72.3 197.3 Up 08:05:04 - 08:35:04 9024
Cedarville 08:20:55 -70.7 Dark Down 70.0 155.0 Up 08:05:55 - 08:35:55 9024
Fall River/Burney 08:20:59 -71.3 Dark Down 70.0 151.3 Up 08:05:59 - 08:35:59 8965
Susanville 08:20:56 -71.9 Dark Down 70.8 152.3 Up 08:05:56 - 08:35:56 8903
Gimple 08:20:56 -72.2 Dark Down 71.0 151.4 Up 08:05:56 - 08:35:56 8872
Greenville 08:20:57 -72.2 Dark Down 70.9 151.2 Up 08:05:57 - 08:35:57 8872
Quincy 08:20:57 -72.4 Dark Down 71.1 150.9 Up 08:05:57 - 08:35:57 8850
Portola 08:20:56 -72.4 Dark Down 71.4 152.0 Up 08:05:56 - 08:35:56 8840
Reno 08:20:53 -72.6 Dark Down 71.9 153.4 Up 08:05:53 - 08:35:53 8816
Carson City 08:20:54 -73.0 Dark Down 72.2 152.9 Up 08:05:54 - 08:35:54 8778
Yerington 08:20:51 -73.0 Dark Down 72.6 154.4 Up 08:05:51 - 08:35:51 8761
Gardnerville 08:20:54 -73.2 Dark Down 72.4 152.7 Up 08:05:54 - 08:35:54 8752
Hawthorne 08:20:49 -73.4 Dark Down 73.2 155.3 Up 08:05:49 - 08:35:49 8716
Tonopah 08:20:44 -73.4 Dark Down 74.0 159.0 Up 08:05:44 - 08:35:44 8677
Lee Vining 08:20:51 -74.0 Dark Down 73.5 153.0 Up 08:05:51 - 08:35:51 8651
Bishop 08:20:48 -74.4 Dark Down 74.3 154.3 Up 08:05:48 - 08:35:48 8593
Beatty 08:20:42 -74.4 Dark Down 75.2 158.9 Up 08:05:42 - 08:35:42 8557
Indian Springs 08:20:38 -74.3 Dark Down 75.8 162.3 Up 08:05:38 - 08:35:38 8532
Lone Pine 08:20:47 -75.0 Dark Down 75.1 154.2 Up 08:05:47 - 08:35:47 8514
Henderson 08:20:35 -74.5 Dark Down 76.5 164.2 Up 08:05:35 - 08:35:35 8481
Patrick 08:20:31 -74.5 Dark Down 77.3 167.9 Up 08:05:31 - 08:35:31 8425
Searchlight/Boulder City 08:20:35 -74.9 Dark Down 77.1 163.8 Up 08:05:35 - 08:35:35 8420
Kingman/Dolan Springs 08:20:31 -74.8 Dark Down 77.5 166.9 Up 08:05:31 - 08:35:31 8399
Laughlin/Bullhead City 08:20:34 -75.0 Dark Down 77.4 164.8 Up 08:05:34 - 08:35:34 8392
Mohave Valley 08:20:34 -75.2 Dark Down 77.7 164.5 Up 08:05:34 - 08:35:34 8362
CPSLO 08:20:55 -76.9 Dark Down 75.1 143.4 Up 08:05:55 - 08:35:55 8354
Lake Havasu City 08:20:32 -75.4 Dark Down 78.1 165.0 Up 08:05:32 - 08:35:32 8322
Parker 08:20:32 -75.7 Dark Down 78.5 164.7 Up 08:05:32 - 08:35:32 8284
Wildwood 08:20:48 -77.5 Dark Down 77.1 147.4 Up 08:05:48 - 08:35:48 8238
Blythe 08:20:33 -76.3 Dark Down 78.9 162.6 Up 08:05:33 - 08:35:33 8224
Idyllwild 08:20:41 -77.2 Dark Down 78.2 153.7 Up 08:05:41 - 08:35:41 8215
Calipatria 08:20:36 -77.1 Dark Down 79.1 157.5 Up 08:05:36 - 08:35:36 8160
Yuma 08:20:32 -77.0 Dark Down 79.8 160.9 Up 08:05:32 - 08:35:32 8123

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 535229, (2022/01/06 08:20UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1  6.04 139
4Ome2Cnc       08:01:43.7 +25:05:22  6.2  2.13 143
PPM 098201     07:59:42.6 +23:10:58  7.9  0.21 143
PPM 098209     08:00:16.5 +23:04:45  9.7  0.10 143
535229         08:00:05.0 +22:59:26 12.4       143
Positions are for J2000

Event circumstances last updated at 2019/07/03 22:03:44 UT

Marc W. Buie, Southwest Research Institute

RECON