RECON: TNO occultation with 469362

Event between (469362) 01KB77 and star GA0780:07775748 with event index number of 1160208

Geocentric closest approach at 2021/05/13 09:27:21 UTC

J2000 position of star is 17:48:36.5 -10:54:52
Equinox of date position of star is 17:49:41.3 -10:55:10
Stellar brightness G=14.9, use SENSEUP=128
Star is 159 degrees from the moon. Moon is 2% illuminated.
TNO apparent brightness V=22.0

[RECON map]
TNO is 28.5 AU from the Sun and 27.6 AU from the Earth.
The TNO is moving 18.6 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 565 seconds.
The 1-sigma cross-track error in the shadow position is 3978 km.
The sky-plane scale is 20044.3 km/arcsec.

The TNO has an absolute magnitude Hv=7.4
Diameter=199.5 km assuming a 5% albedo -- 10.7 sec chord
Diameter=81.5 km assuming a 30% albedo -- 4.4 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 469362, (2021/05/13 09:27UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:43.2 -26:28:39  0.9 24.28 175
35Eta Oph      17:11:36.3 -15:45:00  2.6 10.47 169
PPM 233705     17:54:14.8 -10:54:11  6.1  1.09 158
PPM 233617     17:49:49.7 -10:16:48  8.1  0.64 159
PPM 233625     17:50:37.2 -10:46:46  9.4  0.25 159
469362         17:49:47.7 -10:55:12 14.9       159
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 1.6 sigma about the mid-time.
The median site spacing is 12.0 km RECON observability=1.0 and success probability=5.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 09:29:33 -18.4 Dark Down 28.2 165.7 Low 09:14:33 - 09:44:33 4785
Summerland 09:29:33 -18.8 Dark Down 28.4 165.4 Low 09:14:33 - 09:44:33 4762
Penticton 09:29:34 -18.8 Dark Down 28.5 165.5 Low 09:14:34 - 09:44:34 4760
Okanagan Falls 09:29:34 -19.0 Dark Down 28.7 165.4 Low 09:14:34 - 09:44:34 4749
Oliver 09:29:34 -19.1 Dark Down 28.8 165.4 Low 09:14:34 - 09:44:34 4740
Anarchist Mountain Observatory 09:29:33 -19.2 Dark Down 29.0 165.6 Low 09:14:33 - 09:44:33 4734
Oroville 09:29:34 -19.3 Dark Down 29.1 165.5 Low 09:14:34 - 09:44:34 4728
Tonasket 09:29:34 -19.5 Dark Down 29.3 165.5 Low 09:14:34 - 09:44:34 4714
Okanogan 09:29:34 -19.9 Dark Down 29.6 165.3 Low 09:14:34 - 09:44:34 4690
Brewster 09:29:34 -20.2 Dark Down 29.8 165.0 Low 09:14:34 - 09:44:34 4669
Manson/Chelan 09:29:35 -20.5 Dark Down 30.0 164.6 Low 09:14:35 - 09:44:35 4648
Entiat 09:29:37 -20.7 Dark Down 30.2 164.5 Up 09:14:37 - 09:44:37 4632
Wenatchee 09:29:37 -20.9 Dark Down 30.4 164.3 Up 09:14:37 - 09:44:37 4614
Ellensburg 09:29:37 -21.4 Dark Down 30.8 164.0 Up 09:14:37 - 09:44:37 4583
Pasco 09:29:32 -21.7 Dark Down 31.7 165.5 Up 09:14:32 - 09:44:32 4571
PNWRO 09:29:31 -21.8 Dark Down 32.0 165.7 Up 09:14:31 - 09:44:31 4561
Yakima 09:29:38 -21.8 Dark Down 31.2 163.9 Up 09:14:38 - 09:44:38 4557
Toppenish/White Swan 09:29:37 -21.9 Dark Down 31.4 164.1 Up 09:14:37 - 09:44:37 4547
George/Umatilla 09:29:33 -22.0 Dark Down 32.0 165.2 Up 09:14:33 - 09:44:33 4544
Niwot 09:28:30 -21.6 Dark Down 39.0 181.5 Up 09:13:30 - 09:43:30 4514
SwRI 09:28:30 -21.7 Dark Down 39.1 181.4 Up 09:13:30 - 09:43:30 4505
Goldendale 09:29:39 -22.5 Dark Down 31.8 163.5 Up 09:14:39 - 09:44:39 4501
The Dalles 09:29:40 -22.8 Dark Down 32.0 163.1 Up 09:14:40 - 09:44:40 4478
Maupin 09:29:40 -23.2 Dark Down 32.4 163.1 Up 09:14:40 - 09:44:40 4453
Madras/Culver 09:29:40 -23.7 Dark Down 32.9 163.0 Up 09:14:40 - 09:44:40 4416
Redmond 09:29:40 -24.1 Dark Down 33.3 162.8 Up 09:14:40 - 09:44:40 4391
Sisters 09:29:42 -24.1 Dark Down 33.1 162.4 Up 09:14:42 - 09:44:42 4382
Bend 09:29:40 -24.3 Dark Down 33.4 162.6 Up 09:14:40 - 09:44:40 4373
Oregon Observatory 09:29:42 -24.5 Dark Down 33.6 162.5 Up 09:14:42 - 09:44:42 4358
La Pine/Gilchrist 09:29:42 -24.7 Dark Down 33.8 162.4 Up 09:14:42 - 09:44:42 4342
North Lake 09:29:38 -24.9 Dark Down 34.3 163.0 Up 09:14:38 - 09:44:38 4328
Paisley 09:29:38 -25.3 Dark Down 34.9 163.3 Up 09:14:38 - 09:44:38 4300
Lakeview 09:29:37 -25.7 Dark Down 35.4 163.4 Up 09:14:37 - 09:44:37 4270
Chiloquin 09:29:43 -25.8 Dark Down 34.7 161.7 Up 09:14:43 - 09:44:43 4256
Klamath Falls 09:29:43 -26.1 Dark Down 35.1 161.7 Up 09:14:43 - 09:44:43 4235
Cedarville 09:29:36 -26.3 Dark Down 36.1 163.4 Up 09:14:36 - 09:44:36 4229
Tulelake 09:29:42 -26.3 Dark Down 35.4 162.0 Up 09:14:42 - 09:44:42 4224
Fall River/Burney 09:29:41 -27.1 Dark Down 36.3 161.9 Up 09:14:41 - 09:44:41 4161
Susanville 09:29:38 -27.4 Dark Down 37.1 162.6 Up 09:14:38 - 09:44:38 4136
Gimple 09:29:39 -27.8 Dark Down 37.3 162.3 Up 09:14:39 - 09:44:39 4111
Greenville 09:29:39 -27.8 Dark Down 37.2 162.2 Up 09:14:39 - 09:44:39 4108
Portola 09:29:37 -27.9 Dark Down 37.7 162.7 Up 09:14:37 - 09:44:37 4098
Reno 09:29:35 -28.0 Dark Down 38.1 163.4 Up 09:14:35 - 09:44:35 4096
Quincy 09:29:39 -28.0 Dark Down 37.4 162.2 Up 09:14:39 - 09:44:39 4094
Yerington 09:29:31 -28.2 Dark Down 38.7 164.1 Up 09:14:31 - 09:44:31 4074
Carson City 09:29:33 -28.3 Dark Down 38.4 163.4 Up 09:14:33 - 09:44:33 4071
Tonopah 09:29:22 -28.4 Dark Down 40.0 166.3 Up 09:14:22 - 09:44:22 4059
Hawthorne 09:29:29 -28.5 Dark Down 39.3 164.6 Up 09:14:29 - 09:44:29 4054
Gardnerville 09:29:34 -28.5 Dark Down 38.7 163.4 Up 09:14:34 - 09:44:34 4054
Lee Vining 09:29:31 -29.2 Dark Down 39.7 163.9 Up 09:14:31 - 09:44:31 3999
Indian Springs 09:29:15 -29.1 Dark Down 41.7 167.9 Up 09:14:15 - 09:44:15 3991
Beatty 09:29:20 -29.2 Dark Down 41.2 166.6 Up 09:14:20 - 09:44:20 3985
Bishop 09:29:28 -29.4 Dark Down 40.5 164.7 Up 09:14:28 - 09:44:28 3974
Henderson 09:29:11 -29.3 Dark Down 42.4 168.7 Up 09:14:11 - 09:44:11 3970
Patrick 09:29:07 -29.4 Dark Down 43.2 170.1 Up 09:14:07 - 09:44:07 3953
DCO 09:29:02 -29.3 Dark Down 43.5 170.9 Up 09:14:02 - 09:44:02 3949
Kingman/Dolan Springs 09:29:07 -29.6 Dark Down 43.3 169.8 Up 09:14:07 - 09:44:07 3931
Searchlight/Boulder City 09:29:11 -29.8 Dark Down 42.9 168.7 Up 09:14:11 - 09:44:11 3928
Lone Pine 09:29:26 -30.0 Dark Down 41.3 164.9 Up 09:14:26 - 09:44:26 3926
Laughlin/Bullhead City 09:29:10 -29.9 Dark Down 43.3 169.1 Up 09:14:10 - 09:44:10 3915
Mohave Valley 09:29:09 -30.1 Dark Down 43.6 169.0 Up 09:14:09 - 09:44:09 3894
Lake Havasu City 09:29:08 -30.3 Dark Down 44.0 169.3 Up 09:14:08 - 09:44:08 3870
Parker 09:29:07 -30.6 Dark Down 44.3 169.3 Up 09:14:07 - 09:44:07 3844
Blythe 09:29:08 -31.2 Dark Down 44.8 168.8 Up 09:14:08 - 09:44:08 3794
CPSLO 09:29:36 -32.1 Dark Down 41.9 161.3 Up 09:14:36 - 09:44:36 3751
Idyllwild 09:29:17 -32.0 Dark Down 44.3 166.0 Up 09:14:17 - 09:44:17 3742
Calipatria 09:29:12 -32.0 Dark Down 45.1 167.4 Up 09:14:12 - 09:44:12 3728
Yuma 09:29:08 -32.0 Dark Down 45.7 168.5 Up 09:14:08 - 09:44:08 3720
Wildwood 09:29:27 -32.4 Dark Down 43.6 163.6 Up 09:14:27 - 09:44:27 3716

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 469362, (2021/05/13 09:27UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 24.28 175
35Eta Oph      17:10:22.7 -15:43:29  2.6 10.47 169
PPM 233705     17:53:03.6 -10:53:59  6.1  1.09 158
PPM 233617     17:48:38.8 -10:16:28  8.1  0.64 159
PPM 233625     17:49:26.1 -10:46:27  9.4  0.25 159
469362         17:48:36.5 -10:54:52 14.9       159
Positions are for J2000

Event circumstances last updated at 2019/06/08 01:28:40 UT

Marc W. Buie, Southwest Research Institute

RECON