RECON: TNO occultation with 523765

Event between (523765) 14WD510 and star UC4-610-041334 with event index number of 355785

Geocentric closest approach at 2019/11/27 11:56:03 UTC

J2000 position of star is 07:38:30.4 +31:48:48
Equinox of date position of star is 07:39:44.7 +31:46:05
Stellar brightness R=15.4, use SENSEUP=128
Star is 143 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=22.0

[RECON map]
TNO is 38.8 AU from the Sun and 38.2 AU from the Earth.
The TNO is moving 16.7 km/sec on the sky relative to the star, or, 2.2 arcsec/hr.
The 1-sigma error in the time of the event is 153 seconds.
The 1-sigma cross-track error in the shadow position is 1687 km.
The sky-plane scale is 27680.0 km/arcsec.

The TNO has an absolute magnitude Hv=6.0
Diameter=380.2 km assuming a 5% albedo -- 22.8 sec chord
Diameter=155.2 km assuming a 30% albedo -- 9.3 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 523765, (2019/11/27 11:56UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:31.9 +27:58:35  1.1  4.06 142
PPM 073009     07:41:10.3 +31:57:45  6.4  0.35 143
PPM 072982     07:38:47.2 +31:34:03  7.7  0.29 143
PPM 072994     07:39:37.4 +31:58:40  9.3  0.21 143
523765         07:39:46.6 +31:46:00 15.4       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 5.0 sigma about the mid-time.
The median site spacing is 13.7 km RECON observability=1.0 and success probability=5.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 11:56:16 -33.4 Dark Down 70.1 208.9 Up 11:43:00 - 12:09:33 4760
Summerland 11:56:17 -33.6 Dark Down 70.4 208.6 Up 11:43:00 - 12:09:33 4723
Penticton 11:56:16 -33.5 Dark Down 70.5 209.0 Up 11:43:00 - 12:09:33 4722
Okanagan Falls 11:56:16 -33.6 Dark Down 70.6 209.2 Up 11:42:59 - 12:09:32 4705
Oliver 11:56:13 -33.6 Dark Down 70.8 209.5 Up 11:42:57 - 12:09:30 4692
Anarchist Mountain Observatory 11:56:14 -33.5 Dark Down 70.9 210.2 Up 11:42:57 - 12:09:30 4685
Oroville 11:56:13 -33.5 Dark Down 70.9 210.1 Up 11:42:57 - 12:09:30 4676
Tonasket 11:56:12 -33.5 Dark Down 71.2 210.4 Up 11:42:55 - 12:09:28 4656
Okanogan 11:56:10 -33.7 Dark Down 71.5 210.6 Up 11:42:54 - 12:09:27 4621
Niwot 11:54:45 -23.4 Dark Down 68.2 255.5 Up 11:41:29 - 12:08:02 4608
SwRI 11:54:45 -23.4 Dark Down 68.3 255.6 Up 11:41:28 - 12:08:01 4594
Brewster 11:56:11 -33.8 Dark Down 71.8 210.5 Up 11:42:55 - 12:09:28 4589
Manson/Chelan 11:56:12 -34.1 Dark Down 72.1 209.9 Up 11:42:55 - 12:09:28 4556
Entiat 11:56:13 -34.2 Dark Down 72.3 210.0 Up 11:42:56 - 12:09:29 4534
Wenatchee 11:56:11 -34.3 Dark Down 72.6 210.2 Up 11:42:54 - 12:09:27 4508
Ellensburg 11:56:10 -34.5 Dark Down 73.0 210.3 Up 11:42:53 - 12:09:26 4462
Pasco 11:56:02 -33.6 Dark Down 73.1 215.2 Up 11:42:46 - 12:09:19 4457
PNWRO 11:56:01 -33.4 Dark Down 73.2 216.3 Up 11:42:44 - 12:09:17 4445
Yakima 11:56:09 -34.5 Dark Down 73.4 210.9 Up 11:42:52 - 12:09:25 4426
George/Umatilla 11:56:01 -33.7 Dark Down 73.5 215.3 Up 11:42:45 - 12:09:18 4418
Toppenish/White Swan 11:56:08 -34.4 Dark Down 73.5 211.7 Up 11:42:51 - 12:09:24 4414
Goldendale 11:56:07 -34.8 Dark Down 74.1 211.5 Up 11:42:50 - 12:09:23 4347
The Dalles 11:56:08 -35.0 Dark Down 74.4 210.9 Up 11:42:51 - 12:09:24 4312
Maupin 11:56:05 -35.0 Dark Down 74.8 212.0 Up 11:42:48 - 12:09:21 4279
Madras/Culver 11:56:04 -35.1 Dark Down 75.2 212.9 Up 11:42:48 - 12:09:21 4228
Redmond 11:56:01 -35.1 Dark Down 75.6 213.5 Up 11:42:45 - 12:09:18 4194
Sisters 11:56:04 -35.4 Dark Down 75.7 212.3 Up 11:42:48 - 12:09:21 4179
Bend 11:56:02 -35.3 Dark Down 75.8 213.5 Up 11:42:46 - 12:09:19 4169
Oregon Observatory 11:56:02 -35.4 Dark Down 76.0 213.5 Up 11:42:46 - 12:09:19 4148
La Pine/Gilchrist 11:56:00 -35.4 Dark Down 76.2 213.8 Up 11:42:43 - 12:09:16 4127
North Lake 11:55:57 -35.0 Dark Down 76.3 216.6 Up 11:42:40 - 12:09:13 4113
Paisley 11:55:54 -34.8 Dark Down 76.6 219.1 Up 11:42:38 - 12:09:11 4080
Lakeview 11:55:52 -34.7 Dark Down 76.9 221.0 Up 11:42:35 - 12:09:08 4042
Chiloquin 11:55:59 -35.8 Dark Down 77.3 215.3 Up 11:42:42 - 12:09:15 4010
Cedarville 11:55:48 -34.6 Dark Down 77.3 223.5 Up 11:42:32 - 12:09:05 3991
Klamath Falls 11:55:56 -35.7 Dark Down 77.5 216.4 Up 11:42:39 - 12:09:12 3983
Tulelake 11:55:54 -35.5 Dark Down 77.6 218.1 Up 11:42:38 - 12:09:11 3971
Fall River/Burney 11:55:52 -35.5 Dark Down 78.3 221.1 Up 11:42:35 - 12:09:08 3892
Susanville 11:55:47 -35.0 Dark Down 78.3 225.5 Up 11:42:30 - 12:09:03 3868
Gimple 11:55:47 -35.1 Dark Down 78.6 225.8 Up 11:42:30 - 12:09:03 3833
Greenville 11:55:46 -35.2 Dark Down 78.7 225.5 Up 11:42:30 - 12:09:03 3830
Reno 11:55:40 -34.4 Dark Down 78.5 231.2 Up 11:42:23 - 12:08:56 3828
Portola 11:55:44 -34.9 Dark Down 78.7 228.3 Up 11:42:27 - 12:09:00 3822
Tonopah 11:55:23 -32.4 Dark Down 77.6 243.8 Up 11:42:07 - 12:08:40 3818
Quincy 11:55:47 -35.2 Dark Down 78.8 226.3 Up 11:42:30 - 12:09:03 3811
Yerington 11:55:34 -33.9 Dark Down 78.4 235.2 Up 11:42:17 - 12:08:50 3808
Carson City 11:55:37 -34.4 Dark Down 78.7 232.7 Up 11:42:20 - 12:08:53 3796
Hawthorne 11:55:31 -33.5 Dark Down 78.3 238.5 Up 11:42:15 - 12:08:48 3792
Gardnerville 11:55:38 -34.3 Dark Down 78.8 233.8 Up 11:42:22 - 12:08:55 3776
DCO 11:54:54 -29.0 Dark Down 75.4 261.8 Up 11:41:38 - 12:08:11 3762
Indian Springs 11:55:11 -31.1 Dark Down 77.0 252.7 Up 11:41:55 - 12:08:28 3762
Patrick 11:55:00 -29.6 Dark Down 75.9 259.9 Up 11:41:43 - 12:08:16 3752
Henderson 11:55:06 -30.5 Dark Down 76.7 256.0 Up 11:41:49 - 12:08:22 3750
Beatty 11:55:16 -32.0 Dark Down 77.7 249.5 Up 11:42:00 - 12:08:33 3737
Kingman/Dolan Springs 11:54:59 -29.7 Dark Down 76.1 260.5 Up 11:41:42 - 12:08:15 3722
Lee Vining 11:55:31 -33.8 Dark Down 78.9 239.6 Up 11:42:15 - 12:08:48 3717
Searchlight/Boulder City 11:55:01 -30.4 Dark Down 76.7 258.4 Up 11:41:45 - 12:08:18 3702
Bishop 11:55:26 -33.3 Dark Down 78.7 244.1 Up 11:42:09 - 12:08:42 3698
Laughlin/Bullhead City 11:55:01 -30.1 Dark Down 76.5 260.0 Up 11:41:45 - 12:08:18 3693
Mohave Valley 11:54:58 -30.1 Dark Down 76.6 261.2 Up 11:41:42 - 12:08:15 3669
Lake Havasu City 11:54:56 -29.8 Dark Down 76.4 263.1 Up 11:41:40 - 12:08:13 3647
Lone Pine 11:55:22 -33.0 Dark Down 78.8 248.3 Up 11:42:06 - 12:08:39 3645
Parker 11:54:56 -29.8 Dark Down 76.4 264.5 Up 11:41:39 - 12:08:12 3617
Blythe 11:54:53 -30.0 Dark Down 76.7 266.5 Up 11:41:37 - 12:08:10 3554
Yuma 11:54:51 -29.9 Dark Down 76.8 270.4 Up 11:41:34 - 12:08:07 3469
Calipatria 11:54:57 -30.7 Dark Down 77.5 268.0 Up 11:41:41 - 12:08:14 3460
Idyllwild 11:55:05 -31.7 Dark Down 78.5 264.1 Up 11:41:48 - 12:08:21 3453
CPSLO 11:55:26 -35.0 Dark Down 81.2 249.3 Up 11:42:10 - 12:08:43 3398
Wildwood 11:55:15 -33.3 Dark Down 79.9 260.2 Up 11:41:58 - 12:08:31 3389

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 523765, (2019/11/27 11:56UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1  4.06 142
PPM 073009     07:39:54.0 +32:00:34  6.4  0.35 143
PPM 072982     07:37:31.1 +31:36:49  7.7  0.29 143
PPM 072994     07:38:21.1 +32:01:27  9.3  0.21 143
523765         07:38:30.4 +31:48:48 15.4       143
Positions are for J2000

Event circumstances last updated at 2019/05/23 22:43:06 UT

Marc W. Buie, Southwest Research Institute

RECON