RECON: TNO occultation with 119979

Event between (119979) 02WC19 and star UC4-550-019611 with event index number of 175354

Geocentric closest approach at 2019/01/24 01:43:33 UTC

J2000 position of star is 05:48:53.8 +19:57:11
Equinox of date position of star is 05:49:55.5 +19:57:27
Stellar brightness R=15.6, use SENSEUP=128
Star is 77 degrees from the moon. Moon is 88% illuminated.
TNO apparent brightness V=21.0

[RECON map]
TNO is 40.3 AU from the Sun and 39.5 AU from the Earth.
The TNO is moving 19.8 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 720 seconds.
The 1-sigma cross-track error in the shadow position is 5279 km.
The sky-plane scale is 28664.7 km/arcsec.

The TNO has an absolute magnitude Hv=4.9
Diameter=631.0 km assuming a 5% albedo -- 31.9 sec chord
Diameter=257.6 km assuming a 30% albedo -- 13.0 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 

Star training set for 119979, (2019/01/24 01:44UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:12.3 +07:24:33  0.4 12.64  77
Alnath         05:27:29.9 +28:37:19  1.6 10.07  81
PPM 121513     05:53:31.2 +19:52:16  6.4  0.83  76
PPM 121502     05:52:59.7 +19:31:29  7.1  0.82  76
PPM 121423     05:49:58.2 +19:55:49  8.8  0.03  77
119979         05:50:01.7 +19:57:28 15.6        77
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 1.3 sigma about the mid-time.
The median site spacing is 0.0 km RECON observability=0.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 01:46:43 -10.8 CT Down 36.5 101.7 Up 01:31:43 - 02:01:43 -5009
Tonasket 01:46:45 -10.7 CT Down 36.5 101.5 Up 01:31:45 - 02:01:45 -5030
Okanogan 01:46:46 -10.5 CT Down 36.5 101.2 Up 01:31:46 - 02:01:46 -5057
Brewster 01:46:47 -10.3 CT Down 36.4 100.8 Up 01:31:47 - 02:01:47 -5078
Manson/Chelan 01:46:48 -10.0 CT Down 36.2 100.4 Up 01:31:48 - 02:01:48 -5090
Entiat 01:46:49 -9.9 CT Down 36.2 100.1 Up 01:31:49 - 02:01:49 -5109
Wenatchee 01:46:50 -9.8 CT Down 36.2 99.9 Up 01:31:50 - 02:01:50 -5130
Ellensburg 01:46:51 -9.5 CT Down 36.1 99.4 Up 01:31:51 - 02:01:51 -5164
Yakima 01:46:52 -9.4 CT Down 36.2 99.1 Up 01:31:52 - 02:01:52 -5200
Toppenish/White Swan 01:46:53 -9.4 CT Down 36.3 99.1 Up 01:31:53 - 02:01:53 -5224
Pasco 01:46:51 -10.2 CT Down 37.2 100.0 Up 01:31:51 - 02:01:51 -5259
Goldendale 01:46:56 -9.0 CT Down 36.1 98.4 Up 01:31:56 - 02:01:56 -5266
The Dalles 01:46:56 -8.7 CT Down 35.9 97.9 Up 01:31:56 - 02:01:56 -5280
George/Umatilla 01:46:52 -10.0 CT Down 37.1 99.6 Up 01:31:52 - 02:01:52 -5285
PNWRO 01:46:51 -10.3 CT Down 37.4 100.0 Up 01:31:51 - 02:01:51 -5286
Maupin 01:46:58 -8.6 CT Down 36.1 97.7 Up 01:31:58 - 02:01:58 -5321
Madras/Culver 01:47:00 -8.4 CT Down 36.1 97.3 Up 01:32:00 - 02:02:00 -5370
Sisters 01:47:01 -8.0 CT Down 35.8 96.7 Up 01:32:01 - 02:02:01 -5392
Redmond 01:47:01 -8.3 CT Down 36.1 97.0 Up 01:32:01 - 02:02:01 -5403
Bend 01:47:02 -8.1 CT Down 36.0 96.7 Up 01:32:02 - 02:02:02 -5420
Oregon Observatory 01:47:03 -8.0 CT Down 36.0 96.5 Up 01:32:03 - 02:02:03 -5433
La Pine/Gilchrist 01:47:03 -7.9 CT Down 36.0 96.3 Up 01:32:03 - 02:02:03 -5451
North Lake 01:47:03 -8.1 CT Down 36.4 96.4 Up 01:32:03 - 02:02:03 -5504
Chiloquin 01:47:08 -7.3 CT Down 35.8 95.3 Up 01:32:08 - 02:02:08 -5549
Paisley 01:47:04 -8.2 CT Down 36.8 96.3 Up 01:32:04 - 02:02:04 -5564
Klamath Falls 01:47:09 -7.2 CT Down 35.9 95.1 Up 01:32:09 - 02:02:09 -5583
Tulelake 01:47:08 -7.3 CT Down 36.2 95.1 Up 01:32:08 - 02:02:08 -5615
Lakeview 01:47:05 -8.2 CT Down 37.0 96.1 Up 01:32:05 - 02:02:05 -5616
Cedarville 01:47:07 -8.1 CT Down 37.2 95.7 Up 01:32:07 - 02:02:07 -5683
Fall River/Burney 01:47:10 -7.1 CT Down 36.3 94.5 Up 01:32:10 - 02:02:10 -5704
Susanville 01:47:10 -7.4 CT Down 36.9 94.5 Up 01:32:10 - 02:02:10 -5781
Greenville 01:47:12 -7.1 CT Down 36.7 94.1 Up 01:32:12 - 02:02:12 -5801
Gimple 01:47:12 -7.2 CT Down 36.8 94.2 Up 01:32:12 - 02:02:12 -5803
Quincy 01:47:13 -7.0 CT Down 36.7 94.0 Up 01:32:13 - 02:02:13 -5821
Portola 01:47:12 -7.3 CT Down 37.1 94.2 Up 01:32:12 - 02:02:12 -5843
Reno 01:47:11 -7.7 CT Down 37.6 94.5 Up 01:32:11 - 02:02:11 -5883
Carson City 01:47:12 -7.6 CT Down 37.7 94.2 Up 01:32:12 - 02:02:12 -5919
Gardnerville 01:47:13 -7.6 CT Down 37.7 94.0 Up 01:32:13 - 02:02:13 -5944
Yerington 01:47:11 -8.0 CT Down 38.2 94.5 Up 01:32:11 - 02:02:11 -5951
Hawthorne 01:47:10 -8.3 CT Down 38.6 94.5 Up 01:32:10 - 02:02:10 -6008
Lee Vining 01:47:14 -7.7 CT Down 38.3 93.7 Up 01:32:14 - 02:02:14 -6054
Tonopah 01:47:08 -9.2 CT Down 39.8 95.0 Up 01:32:08 - 02:02:08 -6084
Niwot 01:46:29 -18.6 Dark Down 48.5 106.1 Up 01:31:29 - 02:01:29 -6090
Bishop 01:47:13 -8.1 CT Down 38.9 93.7 Up 01:32:13 - 02:02:13 -6129
Beatty 01:47:10 -9.2 CT Down 40.2 94.4 Up 01:32:10 - 02:02:10 -6209
Lone Pine 01:47:14 -8.1 CT Down 39.2 93.3 Up 01:32:14 - 02:02:14 -6212
Indian Springs 01:47:07 -9.9 CT Down 41.1 94.8 Up 01:32:07 - 02:02:07 -6264
CPSLO 01:47:23 -5.7 CT Down 37.2 90.7 Up 01:32:23 - 02:02:23 -6286
Henderson 01:47:07 -10.3 CT Down 41.7 94.8 Up 01:32:07 - 02:02:07 -6332
Searchlight/Boulder City 01:47:08 -10.2 CT Down 41.8 94.3 Up 01:32:08 - 02:02:08 -6392
Patrick 01:47:05 -11.0 CT Down 42.7 94.9 Up 01:32:05 - 02:02:05 -6419
Laughlin/Bullhead City 01:47:07 -10.4 CT Down 42.1 94.3 Up 01:32:07 - 02:02:07 -6430
Kingman/Dolan Springs 01:47:06 -10.8 CT Down 42.5 94.6 Up 01:32:06 - 02:02:06 -6438
Wildwood 01:47:21 -6.9 CT Down 38.9 91.0 Up 01:32:21 - 02:02:21 -6455
Mohave Valley 01:47:08 -10.3 CT Down 42.1 94.0 Up 01:32:08 - 02:02:08 -6458
DCO 01:47:03 -11.5 CT Down 43.3 95.1 Up 01:32:03 - 02:02:03 -6464
Lake Havasu City 01:47:08 -10.4 CT Down 42.4 93.8 Up 01:32:08 - 02:02:08 -6504
Idyllwild 01:47:17 -8.3 CT Down 40.5 91.7 Up 01:32:17 - 02:02:17 -6532
Parker 01:47:08 -10.3 CT Down 42.4 93.5 Up 01:32:08 - 02:02:08 -6541
Blythe 01:47:11 -9.9 CT Down 42.2 92.9 Up 01:32:11 - 02:02:11 -6589
Calipatria 01:47:15 -9.1 CT Down 41.5 91.9 Up 01:32:15 - 02:02:15 -6620
Yuma 01:47:13 -9.6 CT Down 42.2 92.0 Up 01:32:13 - 02:02:13 -6684

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 119979, (2019/01/24 01:44UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 12.64  77
Alnath         05:26:17.5 +28:36:24  1.6 10.07  81
PPM 121513     05:52:23.4 +19:52:04  6.4  0.83  76
PPM 121502     05:51:52.1 +19:31:17  7.1  0.82  76
PPM 121423     05:48:50.4 +19:55:32  8.8  0.03  77
119979         05:48:53.8 +19:57:11 15.6        77
Positions are for J2000

Event circumstances last updated at 2017/04/24 16:37:41 UT

Marc W. Buie, Southwest Research Institute

RECON