RECON: TNO occultation with 523750

Event between (523750) 14US224 and star GA1160:00352346 with event index number of 355858

Geocentric closest approach at 2019/11/28 06:36:33 UTC

J2000 position of star is 02:40:23.3 +27:25:59
Equinox of date position of star is 02:41:31.8 +27:30:56
Stellar brightness G=16.3, use SENSEUP=128
Star is 138 degrees from the moon. Moon is 3% illuminated.
TNO apparent brightness V=21.6

[RECON map]
TNO is 46.0 AU from the Sun and 45.1 AU from the Earth.
The TNO is moving 24.1 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 198 seconds.
The 1-sigma cross-track error in the shadow position is 3134 km.
The sky-plane scale is 32680.1 km/arcsec.

The TNO has an absolute magnitude Hv=5.0
Diameter=602.6 km assuming a 5% albedo -- 25.0 sec chord
Diameter=246.0 km assuming a 30% albedo -- 10.2 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 523750, (2019/11/28 06:37UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:03.9 +16:32:52  0.8 28.83 163
Hamal          02:08:18.0 +23:33:20  2.0  8.48 130
35 Ari         02:44:37.5 +27:47:27  4.7  0.73 139
PPM 091909     02:42:50.8 +27:01:31  8.3  0.57 138
PPM 091891     02:41:51.1 +27:09:10 10.0  0.37 138
PPM 091880     02:41:15.4 +27:18:22 10.2  0.22 138
523750         02:41:33.5 +27:31:04 16.3       138
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 4.6 sigma about the mid-time.
The median site spacing is 22.3 km RECON observability=1.0 and success probability=11.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 06:35:38 -58.2 Dark Down 67.0 194.5 Up 06:20:38 - 06:50:38 5005
Summerland 06:35:40 -58.4 Dark Down 67.4 194.0 Up 06:20:40 - 06:50:40 4983
Penticton 06:35:39 -58.5 Dark Down 67.4 194.3 Up 06:20:39 - 06:50:39 4974
Okanagan Falls 06:35:40 -58.6 Dark Down 67.6 194.4 Up 06:20:40 - 06:50:40 4955
Oliver 06:35:40 -58.8 Dark Down 67.7 194.5 Up 06:20:40 - 06:50:40 4939
Anarchist Mountain Observatory 06:35:40 -59.0 Dark Down 67.9 195.1 Up 06:20:40 - 06:50:40 4917
Oroville 06:35:40 -59.0 Dark Down 68.0 194.9 Up 06:20:40 - 06:50:40 4912
Tonasket 06:35:40 -59.2 Dark Down 68.2 195.1 Up 06:20:40 - 06:50:40 4888
Okanogan 06:35:41 -59.4 Dark Down 68.5 195.0 Up 06:20:41 - 06:50:41 4859
Brewster 06:35:42 -59.6 Dark Down 68.8 194.7 Up 06:20:42 - 06:50:42 4837
Manson/Chelan 06:35:43 -59.6 Dark Down 69.1 193.9 Up 06:20:43 - 06:50:43 4826
Entiat 06:35:43 -59.8 Dark Down 69.3 193.9 Up 06:20:43 - 06:50:43 4806
Wenatchee 06:35:44 -60.0 Dark Down 69.6 193.8 Up 06:20:44 - 06:50:44 4783
Ellensburg 06:35:46 -60.2 Dark Down 70.0 193.6 Up 06:20:46 - 06:50:46 4748
Yakima 06:35:46 -60.5 Dark Down 70.4 193.8 Up 06:20:46 - 06:50:46 4708
Toppenish/White Swan 06:35:46 -60.8 Dark Down 70.6 194.4 Up 06:20:46 - 06:50:46 4682
Goldendale 06:35:48 -61.0 Dark Down 71.2 193.6 Up 06:20:48 - 06:50:48 4638
Pasco 06:35:42 -61.4 Dark Down 70.5 197.7 Up 06:20:42 - 06:50:42 4636
The Dalles 06:35:49 -61.0 Dark Down 71.5 192.8 Up 06:20:49 - 06:50:49 4625
George/Umatilla 06:35:43 -61.6 Dark Down 70.8 197.5 Up 06:20:43 - 06:50:43 4608
PNWRO 06:35:42 -61.7 Dark Down 70.7 198.5 Up 06:20:42 - 06:50:42 4605
Maupin 06:35:50 -61.4 Dark Down 71.9 193.4 Up 06:20:50 - 06:50:50 4580
Madras/Culver 06:35:51 -61.8 Dark Down 72.4 193.7 Up 06:20:51 - 06:50:51 4527
Sisters 06:35:52 -61.9 Dark Down 72.8 192.6 Up 06:20:52 - 06:50:52 4506
Redmond 06:35:51 -62.1 Dark Down 72.8 193.8 Up 06:20:51 - 06:50:51 4492
Bend 06:35:52 -62.2 Dark Down 73.0 193.6 Up 06:20:52 - 06:50:52 4475
Oregon Observatory 06:35:53 -62.2 Dark Down 73.2 193.3 Up 06:20:53 - 06:50:53 4461
La Pine/Gilchrist 06:35:53 -62.4 Dark Down 73.4 193.3 Up 06:20:53 - 06:50:53 4442
North Lake 06:35:52 -63.0 Dark Down 73.7 195.5 Up 06:20:52 - 06:50:52 4381
Chiloquin 06:35:56 -63.0 Dark Down 74.5 193.1 Up 06:20:56 - 06:50:56 4340
Paisley 06:35:52 -63.6 Dark Down 74.2 197.2 Up 06:20:52 - 06:50:52 4315
Klamath Falls 06:35:56 -63.3 Dark Down 74.9 193.7 Up 06:20:56 - 06:50:56 4303
Tulelake 06:35:56 -63.6 Dark Down 75.1 194.9 Up 06:20:56 - 06:50:56 4267
Lakeview 06:35:52 -64.0 Dark Down 74.6 198.3 Up 06:20:52 - 06:50:52 4258
Cedarville 06:35:52 -64.6 Dark Down 75.2 199.7 Up 06:20:52 - 06:50:52 4186
Fall River/Burney 06:35:57 -64.3 Dark Down 75.9 196.1 Up 06:20:57 - 06:50:57 4172
Susanville 06:35:55 -65.2 Dark Down 76.4 199.6 Up 06:20:55 - 06:50:55 4086
Greenville 06:35:57 -65.2 Dark Down 76.7 198.9 Up 06:20:57 - 06:50:57 4067
Gimple 06:35:56 -65.2 Dark Down 76.7 199.2 Up 06:20:56 - 06:50:56 4064
Quincy 06:35:57 -65.3 Dark Down 76.9 199.2 Up 06:20:57 - 06:50:57 4046
Portola 06:35:55 -65.7 Dark Down 76.9 201.1 Up 06:20:55 - 06:50:55 4019
Reno 06:35:54 -66.2 Dark Down 76.9 203.9 Up 06:20:54 - 06:50:54 3973
Carson City 06:35:54 -66.5 Dark Down 77.2 204.7 Up 06:20:54 - 06:50:54 3935
Gardnerville 06:35:54 -66.7 Dark Down 77.4 205.3 Up 06:20:54 - 06:50:54 3908
Yerington 06:35:52 -67.0 Dark Down 77.2 207.4 Up 06:20:52 - 06:50:52 3897
Hawthorne 06:35:51 -67.6 Dark Down 77.4 210.3 Up 06:20:51 - 06:50:51 3833
Lee Vining 06:35:54 -67.7 Dark Down 78.1 209.8 Up 06:20:54 - 06:50:54 3789
Tonopah 06:35:47 -68.7 Dark Down 77.2 216.4 Up 06:20:47 - 06:50:47 3745
Bishop 06:35:52 -68.6 Dark Down 78.3 214.1 Up 06:20:52 - 06:50:52 3706
Niwot 06:35:05 -70.9 Dark Down 68.9 239.3 Up 06:20:05 - 06:50:05 3685
SwRI 06:35:05 -71.0 Dark Down 69.0 239.4 Up 06:20:05 - 06:50:05 3676
Lone Pine 06:35:52 -69.3 Dark Down 78.8 217.5 Up 06:20:52 - 06:50:52 3617
Beatty 06:35:47 -69.8 Dark Down 77.9 221.2 Up 06:20:47 - 06:50:47 3611
CPSLO 06:36:03 -68.5 Dark Down 81.0 210.5 Up 06:21:03 - 06:51:03 3560
Indian Springs 06:35:44 -70.6 Dark Down 77.5 225.7 Up 06:20:44 - 06:50:44 3547
Henderson 06:35:42 -71.4 Dark Down 77.5 229.6 Up 06:20:42 - 06:50:42 3472
Searchlight/Boulder City 06:35:43 -71.8 Dark Down 77.8 231.8 Up 06:20:43 - 06:50:43 3410
Patrick 06:35:39 -72.4 Dark Down 77.1 234.9 Up 06:20:39 - 06:50:39 3376
Wildwood 06:35:57 -70.6 Dark Down 80.9 224.7 Up 06:20:57 - 06:50:57 3371
Laughlin/Bullhead City 06:35:42 -72.2 Dark Down 77.8 233.9 Up 06:20:42 - 06:50:42 3369
Kingman/Dolan Springs 06:35:40 -72.5 Dark Down 77.4 235.2 Up 06:20:40 - 06:50:40 3357
Mohave Valley 06:35:42 -72.5 Dark Down 77.9 235.0 Up 06:20:42 - 06:50:42 3340
DCO 06:35:37 -73.0 Dark Down 76.8 237.8 Up 06:20:37 - 06:50:37 3325
Lake Havasu City 06:35:42 -72.9 Dark Down 78.0 237.2 Up 06:20:42 - 06:50:42 3291
Idyllwild 06:35:51 -72.0 Dark Down 80.0 233.4 Up 06:20:51 - 06:50:51 3277
Parker 06:35:42 -73.2 Dark Down 78.1 238.7 Up 06:20:42 - 06:50:42 3253
Blythe 06:35:44 -73.4 Dark Down 78.6 240.1 Up 06:20:44 - 06:50:44 3205
Calipatria 06:35:48 -73.1 Dark Down 79.5 239.8 Up 06:20:48 - 06:50:48 3179
Yuma 06:35:45 -74.0 Dark Down 79.1 244.2 Up 06:20:45 - 06:50:45 3108

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 523750, (2019/11/28 06:37UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 28.83 163
Hamal          02:07:10.7 +23:27:42  2.0  8.48 130
35 Ari         02:43:27.1 +27:42:25  4.7  0.73 139
PPM 091909     02:41:40.7 +26:56:28  8.3  0.57 138
PPM 091891     02:40:41.1 +27:04:06 10.0  0.37 138
PPM 091880     02:40:05.3 +27:13:17 10.2  0.22 138
523750         02:40:23.3 +27:25:59 16.3       138
Positions are for J2000

Event circumstances last updated at 2019/06/07 22:55:35 UT

Marc W. Buie, Southwest Research Institute

RECON