RECON: TNO occultation with 129772

Event between (129772) 99HR11 and star UC4-393-059103 with event index number of 314640

Geocentric closest approach at 2019/05/30 08:00:40 UTC

J2000 position of star is 14:20:17.6 -11:25:19
Equinox of date position of star is 14:21:18.4 -11:30:27
Stellar brightness R=16.4, use SENSEUP=128
Star is 162 degrees from the moon. Moon is 18% illuminated.
TNO apparent brightness V=23.5

[RECON map]
TNO is 42.2 AU from the Sun and 41.3 AU from the Earth.
The TNO is moving 20.5 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 294 seconds.
The 1-sigma cross-track error in the shadow position is 3698 km.
The sky-plane scale is 29964.1 km/arcsec.

The TNO has an absolute magnitude Hv=7.2
Diameter=218.8 km assuming a 5% albedo -- 10.7 sec chord
Diameter=89.3 km assuming a 30% albedo -- 4.4 sec chord
Dynamical classification is 7:4EEE
 
 
 
 
 
 

Star training set for 129772, (2019/05/30 08:01UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:13.1 -11:15:43  1.0 13.51 171
2 Lib          14:24:28.5 -11:48:06  6.2  0.82 162
PPM 228659     14:22:18.9 -11:29:12  8.2  0.24 162
PPM 228638     14:21:10.0 -11:22:37  9.5  0.14 162
129772         14:21:20.3 -11:30:37 16.4       162
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 3.1 sigma about the mid-time.
The median site spacing is 11.3 km RECON observability=1.0 and success probability=6.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 08:00:12 -18.4 Dark Down 22.2 215.4 Low 07:45:12 - 08:15:12 1302
Summerland 08:00:13 -18.4 Dark Down 22.3 215.0 Low 07:45:13 - 08:15:13 1297
Penticton 08:00:11 -18.7 Dark Down 22.5 215.3 Low 07:45:11 - 08:15:11 1286
Okanagan Falls 08:00:11 -18.9 Dark Down 22.7 215.3 Low 07:45:11 - 08:15:11 1278
Oliver 08:00:10 -19.1 Dark Down 22.8 215.3 Low 07:45:10 - 08:15:10 1271
Anarchist Mountain Observatory 08:00:09 -19.2 Dark Down 22.9 215.6 Low 07:45:09 - 08:15:09 1266
Oroville 08:00:09 -19.3 Dark Down 23.0 215.5 Low 07:45:09 - 08:15:09 1262
Tonasket 08:00:09 -19.5 Dark Down 23.2 215.6 Low 07:45:09 - 08:15:09 1252
Okanogan 08:00:08 -19.9 Dark Down 23.5 215.5 Low 07:45:08 - 08:15:08 1236
Brewster 08:00:08 -20.2 Dark Down 23.8 215.4 Low 07:45:08 - 08:15:08 1222
Manson/Chelan 08:00:08 -20.4 Dark Down 24.1 215.1 Low 07:45:08 - 08:15:08 1209
Entiat 08:00:08 -20.6 Dark Down 24.3 215.1 Low 07:45:08 - 08:15:08 1199
Wenatchee 08:00:07 -20.8 Dark Down 24.6 215.0 Low 07:45:07 - 08:15:07 1186
Ellensburg 08:00:07 -21.3 Dark Down 25.0 214.9 Low 07:45:07 - 08:15:07 1165
Yakima 08:00:06 -21.7 Dark Down 25.3 215.0 Low 07:45:06 - 08:15:06 1146
Pasco 08:00:01 -22.0 Dark Down 25.0 216.5 Low 07:45:01 - 08:15:01 1145
Toppenish/White Swan 08:00:05 -21.9 Dark Down 25.4 215.2 Low 07:45:05 - 08:15:05 1138
PNWRO 07:59:59 -22.2 Dark Down 25.1 216.8 Low 07:44:59 - 08:14:59 1136
George/Umatilla 08:00:00 -22.3 Dark Down 25.4 216.4 Low 07:45:00 - 08:15:00 1127
Goldendale 08:00:05 -22.4 Dark Down 26.1 215.0 Low 07:45:05 - 08:15:05 1107
The Dalles 08:00:05 -22.7 Dark Down 26.4 214.7 Low 07:45:05 - 08:15:05 1092
Maupin 08:00:03 -23.1 Dark Down 26.7 214.9 Low 07:45:03 - 08:15:03 1073
Madras/Culver 08:00:02 -23.6 Dark Down 27.2 215.0 Low 07:45:02 - 08:15:02 1045
Redmond 08:00:02 -24.0 Dark Down 27.5 215.0 Low 07:45:02 - 08:15:02 1026
Sisters 08:00:03 -24.0 Dark Down 27.6 214.6 Low 07:45:03 - 08:15:03 1023
Bend 08:00:01 -24.2 Dark Down 27.7 215.0 Low 07:45:01 - 08:15:01 1014
Oregon Observatory 08:00:01 -24.4 Dark Down 27.9 214.9 Low 07:45:01 - 08:15:01 1003
La Pine/Gilchrist 08:00:01 -24.6 Dark Down 28.1 214.9 Low 07:45:01 - 08:15:01 992
North Lake 07:59:58 -25.0 Dark Down 28.2 215.6 Low 07:44:58 - 08:14:58 977
Paisley 07:59:55 -25.6 Dark Down 28.5 216.1 Low 07:44:55 - 08:14:55 952
Niwot 07:58:59 -26.5 Dark Down 22.5 231.0 Low 07:43:59 - 08:13:59 939
Chiloquin 07:59:59 -25.7 Dark Down 29.2 214.9 Low 07:44:59 - 08:14:59 929
Lakeview 07:59:53 -26.1 Dark Down 28.8 216.5 Low 07:44:53 - 08:14:53 927
Klamath Falls 07:59:58 -26.0 Dark Down 29.4 215.0 Low 07:44:58 - 08:14:58 912
Tulelake 07:59:56 -26.3 Dark Down 29.5 215.4 Low 07:44:56 - 08:14:56 901
Cedarville 07:59:51 -26.7 Dark Down 29.3 216.9 Low 07:44:51 - 08:14:51 893
Fall River/Burney 07:59:54 -27.2 Dark Down 30.2 215.8 Up 07:44:54 - 08:14:54 851
Susanville 07:59:49 -27.8 Dark Down 30.4 216.8 Up 07:44:49 - 08:14:49 825
Gimple 07:59:49 -28.1 Dark Down 30.7 216.6 Up 07:44:49 - 08:14:49 806
Greenville 07:59:49 -28.1 Dark Down 30.8 216.6 Up 07:44:49 - 08:14:49 805
Quincy 07:59:49 -28.3 Dark Down 30.9 216.6 Up 07:44:49 - 08:14:49 794
Portola 07:59:47 -28.4 Dark Down 30.8 217.2 Up 07:44:47 - 08:14:47 792
Reno 07:59:44 -28.7 Dark Down 30.7 217.9 Up 07:44:44 - 08:14:44 785
Carson City 07:59:43 -29.1 Dark Down 31.0 218.0 Up 07:44:43 - 08:14:43 764
Yerington 07:59:40 -29.3 Dark Down 30.8 218.7 Up 07:44:40 - 08:14:40 760
Gardnerville 07:59:42 -29.3 Dark Down 31.2 218.2 Up 07:44:42 - 08:14:42 750
Hawthorne 07:59:37 -29.7 Dark Down 30.9 219.4 Up 07:44:37 - 08:14:37 738
Tonopah 07:59:31 -30.1 Dark Down 30.6 221.0 Up 07:44:31 - 08:14:31 726
Lee Vining 07:59:37 -30.3 Dark Down 31.6 219.1 Up 07:44:37 - 08:14:37 699
Bishop 07:59:33 -30.9 Dark Down 31.7 220.1 Up 07:44:33 - 08:14:33 671
Beatty 07:59:26 -31.3 Dark Down 31.2 221.8 Up 07:44:26 - 08:14:26 660
Indian Springs 07:59:21 -31.5 Dark Down 30.9 223.0 Up 07:44:21 - 08:14:21 651
Lone Pine 07:59:29 -31.6 Dark Down 32.1 220.7 Up 07:44:29 - 08:14:29 627
Henderson 07:59:17 -32.0 Dark Down 30.9 223.8 Up 07:44:17 - 08:14:17 625
Patrick 07:59:11 -32.5 Dark Down 30.7 225.1 Up 07:44:11 - 08:14:11 596
Searchlight/Boulder City 07:59:15 -32.6 Dark Down 31.3 224.1 Up 07:44:15 - 08:14:15 589
DCO 07:59:08 -32.7 Dark Down 30.6 225.9 Up 07:44:08 - 08:14:08 583
Kingman/Dolan Springs 07:59:11 -32.7 Dark Down 31.0 225.0 Up 07:44:11 - 08:14:11 580
Laughlin/Bullhead City 07:59:13 -32.8 Dark Down 31.3 224.6 Up 07:44:13 - 08:14:13 573
Mohave Valley 07:59:12 -33.1 Dark Down 31.5 224.7 Up 07:44:12 - 08:14:12 556
Lake Havasu City 07:59:11 -33.5 Dark Down 31.7 225.1 Up 07:44:11 - 08:14:11 532
CPSLO 07:59:36 -33.0 Dark Down 34.5 218.7 Up 07:44:36 - 08:14:36 512
Parker 07:59:09 -33.8 Dark Down 31.9 225.3 Up 07:44:09 - 08:14:09 509
Blythe 07:59:09 -34.4 Dark Down 32.4 225.2 Up 07:44:09 - 08:14:09 471
Wildwood 07:59:25 -34.1 Dark Down 34.3 221.2 Up 07:44:25 - 08:14:25 458
Idyllwild 07:59:17 -34.4 Dark Down 33.6 223.2 Up 07:44:17 - 08:14:17 456
Calipatria 07:59:11 -34.9 Dark Down 33.3 224.6 Up 07:44:11 - 08:14:11 428
Yuma 07:59:07 -35.3 Dark Down 33.1 225.6 Up 07:44:07 - 08:14:07 408

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 129772, (2019/05/30 08:01UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 13.51 171
2 Lib          14:23:25.6 -11:42:52  6.2  0.82 162
PPM 228659     14:21:16.1 -11:23:55  8.2  0.24 162
PPM 228638     14:20:07.4 -11:17:19  9.5  0.14 162
129772         14:20:17.6 -11:25:19 16.4       162
Positions are for J2000

Event circumstances last updated at 2018/10/24 21:31:39 UT

Marc W. Buie, Southwest Research Institute

RECON