RECON: TNO occultation with 444030

Event between (444030) 04NT33 and star UC4-551-136923 with event index number of 316384

Geocentric closest approach at 2019/10/25 05:27:46 UTC

J2000 position of star is 21:44:25.4 +20:01:04
Equinox of date position of star is 21:45:18.1 +20:06:18
Stellar brightness R=16.3, use SENSEUP=128
Star is 141 degrees from the moon. Moon is 12% illuminated.
TNO apparent brightness V=20.9

[RECON map]
TNO is 39.3 AU from the Sun and 38.8 AU from the Earth.
The TNO is moving 17.7 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 125 seconds.
The 1-sigma cross-track error in the shadow position is 4677 km.
The sky-plane scale is 28141.5 km/arcsec.

The TNO has an absolute magnitude Hv=4.8
Diameter=660.7 km assuming a 5% albedo -- 37.3 sec chord
Diameter=269.7 km assuming a 30% albedo -- 15.2 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 444030, (2019/10/25 05:28UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:06.5 +45:21:07  1.3 28.41 114
53Eps Cyg      20:47:00.8 +34:02:43  2.5 19.00 122
PPM 113638     21:50:22.5 +20:33:20  6.3  1.26 142
PPM 140632     21:47:47.8 +20:00:59  8.4  0.58 142
PPM 140559     21:44:50.4 +20:00:40  9.0  0.15 141
444030         21:45:20.9 +20:06:34 16.3       141
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 16.0 km RECON observability=1.0 and success probability=6.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Summerland 05:24:19 -42.6 Dark Down 52.5 227.6 Up 05:13:25 - 05:35:14 6580
Kelowna 05:24:18 -42.8 Dark Down 52.3 228.0 Up 05:13:24 - 05:35:13 6563
Penticton 05:24:20 -42.9 Dark Down 52.7 228.2 Up 05:13:25 - 05:35:14 6547
Okanagan Falls 05:24:20 -43.1 Dark Down 52.8 228.3 Up 05:13:25 - 05:35:14 6535
Oliver 05:24:21 -43.2 Dark Down 52.9 228.5 Up 05:13:27 - 05:35:16 6523
Anarchist Mountain Observatory 05:24:18 -43.4 Dark Down 52.9 228.9 Up 05:13:23 - 05:35:12 6500
Oroville 05:24:22 -43.4 Dark Down 53.0 228.9 Up 05:13:27 - 05:35:16 6499
Tonasket 05:24:21 -43.5 Dark Down 53.2 229.2 Up 05:13:27 - 05:35:16 6482
Okanogan 05:24:23 -43.7 Dark Down 53.4 229.3 Up 05:13:29 - 05:35:18 6468
Manson/Chelan 05:24:28 -43.7 Dark Down 54.0 229.1 Up 05:13:34 - 05:35:23 6467
Brewster 05:24:25 -43.8 Dark Down 53.7 229.3 Up 05:13:31 - 05:35:20 6460
Entiat 05:24:29 -43.8 Dark Down 54.2 229.2 Up 05:13:34 - 05:35:23 6456
Wenatchee 05:24:31 -43.9 Dark Down 54.4 229.3 Up 05:13:36 - 05:35:25 6445
Ellensburg 05:24:32 -44.1 Dark Down 54.8 229.5 Up 05:13:38 - 05:35:27 6430
Yakima 05:24:35 -44.3 Dark Down 55.1 229.9 Up 05:13:41 - 05:35:30 6403
Toppenish/White Swan 05:24:35 -44.5 Dark Down 55.1 230.4 Up 05:13:41 - 05:35:30 6378
The Dalles 05:24:40 -44.6 Dark Down 56.0 230.2 Up 05:13:45 - 05:35:34 6374
Goldendale 05:24:39 -44.6 Dark Down 55.7 230.5 Up 05:13:45 - 05:35:34 6367
Maupin 05:24:41 -44.9 Dark Down 56.2 230.8 Up 05:13:46 - 05:35:35 6340
Sisters 05:24:47 -45.1 Dark Down 57.0 231.2 Up 05:13:53 - 05:35:42 6312
Madras/Culver 05:24:46 -45.2 Dark Down 56.6 231.5 Up 05:13:51 - 05:35:40 6306
Pasco 05:24:33 -45.3 Dark Down 54.5 232.2 Up 05:13:39 - 05:35:28 6294
Redmond 05:24:44 -45.4 Dark Down 56.8 231.8 Up 05:13:50 - 05:35:39 6285
George/Umatilla 05:24:35 -45.4 Dark Down 54.8 232.3 Up 05:13:41 - 05:35:30 6284
Bend 05:24:49 -45.4 Dark Down 57.0 231.9 Up 05:13:55 - 05:35:44 6280
Oregon Observatory 05:24:48 -45.4 Dark Down 57.2 231.9 Up 05:13:54 - 05:35:43 6276
La Pine/Gilchrist 05:24:52 -45.5 Dark Down 57.4 232.1 Up 05:13:57 - 05:35:46 6267
PNWRO 05:24:35 -45.6 Dark Down 54.5 232.8 Up 05:13:41 - 05:35:30 6264
Chiloquin 05:24:56 -45.9 Dark Down 58.3 233.1 Up 05:14:02 - 05:35:51 6216
North Lake 05:24:50 -46.1 Dark Down 57.3 233.5 Up 05:13:56 - 05:35:45 6200
Klamath Falls 05:24:58 -46.2 Dark Down 58.4 233.6 Up 05:14:03 - 05:35:52 6189
Tulelake 05:24:59 -46.5 Dark Down 58.4 234.4 Up 05:14:05 - 05:35:54 6152
Paisley 05:24:53 -46.7 Dark Down 57.4 234.7 Up 05:13:58 - 05:35:47 6140
Lakeview 05:24:54 -47.1 Dark Down 57.6 235.6 Up 05:14:00 - 05:35:49 6094
Fall River/Burney 05:25:01 -47.1 Dark Down 58.8 235.7 Up 05:14:06 - 05:35:55 6087
Cedarville 05:24:57 -47.6 Dark Down 57.8 236.7 Up 05:14:03 - 05:35:52 6039
Greenville 05:25:07 -47.8 Dark Down 59.0 237.6 Up 05:14:12 - 05:36:01 5998
Susanville 05:25:03 -47.9 Dark Down 58.7 237.6 Up 05:14:09 - 05:35:58 5996
Gimple 05:25:05 -47.9 Dark Down 59.0 237.7 Up 05:14:10 - 05:35:59 5992
Quincy 05:25:05 -47.9 Dark Down 59.2 237.9 Up 05:14:11 - 05:36:00 5984
Portola 05:25:05 -48.3 Dark Down 58.9 238.7 Up 05:14:10 - 05:35:59 5944
Reno 05:25:04 -48.9 Dark Down 58.6 239.9 Up 05:14:09 - 05:35:58 5883
Carson City 05:25:07 -49.1 Dark Down 58.8 240.5 Up 05:14:12 - 05:36:01 5858
Gardnerville 05:25:10 -49.3 Dark Down 58.9 240.9 Up 05:14:15 - 05:36:04 5839
Yerington 05:25:09 -49.6 Dark Down 58.4 241.6 Up 05:14:14 - 05:36:03 5803
Hawthorne 05:25:07 -50.2 Dark Down 58.3 242.9 Up 05:14:12 - 05:36:01 5737
Lee Vining 05:25:13 -50.2 Dark Down 58.9 243.1 Up 05:14:19 - 05:36:08 5732
CPSLO 05:25:30 -50.5 Dark Down 61.1 245.5 Up 05:14:35 - 05:36:24 5666
Bishop 05:25:14 -51.0 Dark Down 58.6 244.9 Up 05:14:19 - 05:36:08 5644
Tonopah 05:25:07 -51.4 Dark Down 57.5 245.2 Up 05:14:12 - 05:36:01 5612
Lone Pine 05:25:17 -51.7 Dark Down 58.7 246.4 Up 05:14:23 - 05:36:12 5571
Beatty 05:25:13 -52.4 Dark Down 57.6 247.4 Up 05:14:18 - 05:36:07 5504
Wildwood 05:25:29 -52.5 Dark Down 60.0 249.8 Up 05:14:34 - 05:36:23 5443
Indian Springs 05:25:10 -53.3 Dark Down 56.9 249.0 Up 05:14:16 - 05:36:05 5410
Henderson 05:25:11 -54.0 Dark Down 56.6 250.5 Up 05:14:16 - 05:36:05 5328
Idyllwild 05:25:25 -54.1 Dark Down 58.6 252.3 Up 05:14:30 - 05:36:19 5289
Searchlight/Boulder City 05:25:14 -54.4 Dark Down 56.7 251.4 Up 05:14:19 - 05:36:08 5285
Laughlin/Bullhead City 05:25:16 -54.8 Dark Down 56.5 252.1 Up 05:14:21 - 05:36:10 5242
Mohave Valley 05:25:15 -55.0 Dark Down 56.6 252.5 Up 05:14:20 - 05:36:09 5223
Patrick 05:25:12 -55.1 Dark Down 55.9 252.5 Up 05:14:18 - 05:36:07 5213
Kingman/Dolan Springs 05:25:11 -55.1 Dark Down 56.1 252.6 Up 05:14:17 - 05:36:06 5210
Lake Havasu City 05:25:17 -55.4 Dark Down 56.5 253.4 Up 05:14:23 - 05:36:12 5179
Calipatria 05:25:28 -55.3 Dark Down 57.8 254.3 Up 05:14:33 - 05:36:22 5168
Parker 05:25:19 -55.6 Dark Down 56.6 253.9 Up 05:14:25 - 05:36:14 5153
DCO 05:25:12 -55.8 Dark Down 55.5 253.5 Up 05:14:18 - 05:36:07 5146
Blythe 05:25:23 -55.7 Dark Down 57.0 254.4 Up 05:14:29 - 05:36:18 5138
Yuma 05:25:26 -56.1 Dark Down 57.2 255.8 Up 05:14:32 - 05:36:21 5078
Niwot 05:24:30 -56.8 Dark Down 48.1 254.4 Up 05:13:35 - 05:35:24 5053

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 444030, (2019/10/25 05:28UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 28.41 114
53Eps Cyg      20:46:13.2 +33:58:19  2.5 19.00 122
PPM 113638     21:49:26.9 +20:27:45  6.3  1.26 142
PPM 140632     21:46:52.1 +19:55:26  8.4  0.58 142
PPM 140559     21:43:54.9 +19:55:11  9.0  0.15 141
444030         21:44:25.4 +20:01:04 16.3       141
Positions are for J2000

Event circumstances last updated at 2018/10/24 22:02:30 UT

Marc W. Buie, Southwest Research Institute

RECON