RECON: TNO occultation with 14UT114

Event between 14UT114 and star UC4-635-018333 with event index number of 236103

Geocentric closest approach at 2019/12/28 04:55:27 UTC

J2000 position of star is 04:39:30.6 +36:56:03
Equinox of date position of star is 04:40:43.0 +36:58:06
Stellar brightness R=16.4, use SENSEUP=128
Star is 133 degrees from the moon. Moon is 4% illuminated.
TNO apparent brightness V=20.9

[RECON map]
TNO is 15.9 AU from the Sun and 15.0 AU from the Earth.
The TNO is moving 19.4 km/sec on the sky relative to the star, or, 6.4 arcsec/hr.
The 1-sigma error in the time of the event is 145 seconds.
The 1-sigma cross-track error in the shadow position is 1108 km.
The sky-plane scale is 10893.2 km/arcsec.

The TNO has an absolute magnitude Hv=8.8
Diameter=104.7 km assuming a 5% albedo -- 5.4 sec chord
Diameter=42.8 km assuming a 30% albedo -- 2.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 14UT114, (2019/12/28 04:55UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:04.2 +16:32:53  0.8 20.44 130
3Iot Aur       04:58:17.9 +33:11:45  2.7  5.20 136
PPM 069587     04:43:12.0 +38:19:00  6.2  1.42 133
PPM 069579     04:42:04.9 +36:53:14  8.5  0.26 133
PPM 069567     04:40:39.4 +36:53:02  9.7  0.10 133
14UT114        04:40:51.0 +36:58:20 16.4       133
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 22.6 km RECON observability=1.0 and success probability=40.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 04:56:10 -46.0 Dark Down 71.8 124.1 Up 04:43:37 - 05:08:44 1427
Tonasket 04:56:11 -46.1 Dark Down 71.9 123.6 Up 04:43:37 - 05:08:44 1406
Okanogan 04:56:12 -46.1 Dark Down 72.0 122.4 Up 04:43:39 - 05:08:46 1381
Brewster 04:56:14 -46.1 Dark Down 72.0 121.4 Up 04:43:40 - 05:08:47 1363
Manson/Chelan 04:56:15 -45.9 Dark Down 71.9 120.1 Up 04:43:42 - 05:08:49 1358
Entiat 04:56:16 -45.9 Dark Down 72.0 119.4 Up 04:43:43 - 05:08:50 1341
Wenatchee 04:56:18 -45.9 Dark Down 72.1 118.6 Up 04:43:44 - 05:08:51 1321
Ellensburg 04:56:20 -45.9 Dark Down 72.2 117.1 Up 04:43:46 - 05:08:53 1292
Yakima 04:56:21 -46.0 Dark Down 72.3 115.9 Up 04:43:48 - 05:08:55 1255
Toppenish/White Swan 04:56:21 -46.2 Dark Down 72.5 115.6 Up 04:43:48 - 05:08:55 1229
Goldendale 04:56:24 -46.0 Dark Down 72.5 113.3 Up 04:43:51 - 05:08:58 1195
The Dalles 04:56:26 -45.9 Dark Down 72.3 112.1 Up 04:43:52 - 05:08:59 1189
Pasco 04:56:17 -47.1 Dark Down 73.4 117.4 Up 04:43:44 - 05:08:51 1169
George/Umatilla 04:56:19 -47.0 Dark Down 73.4 116.0 Up 04:43:45 - 05:08:52 1146
Maupin 04:56:27 -46.0 Dark Down 72.6 111.1 Up 04:43:53 - 05:09:00 1146
PNWRO 04:56:17 -47.3 Dark Down 73.6 117.1 Up 04:43:44 - 05:08:51 1137
Madras/Culver 04:56:29 -46.1 Dark Down 72.7 109.4 Up 04:43:55 - 05:09:02 1097
Sisters 04:56:31 -45.9 Dark Down 72.5 107.7 Up 04:43:58 - 05:09:05 1085
Redmond 04:56:30 -46.2 Dark Down 72.8 108.2 Up 04:43:56 - 05:09:03 1066
Bend 04:56:31 -46.1 Dark Down 72.8 107.4 Up 04:43:58 - 05:09:05 1052
Oregon Observatory 04:56:32 -46.1 Dark Down 72.8 106.6 Up 04:43:59 - 05:09:06 1042
La Pine/Gilchrist 04:56:33 -46.1 Dark Down 72.8 105.9 Up 04:43:59 - 05:09:06 1025
North Lake 04:56:33 -46.6 Dark Down 73.3 105.4 Up 04:43:59 - 05:09:06 960
Chiloquin 04:56:36 -46.1 Dark Down 72.8 102.0 Up 04:44:02 - 05:09:09 938
Klamath Falls 04:56:36 -46.2 Dark Down 72.9 101.0 Up 04:44:02 - 05:09:09 904
Paisley 04:56:33 -47.0 Dark Down 73.7 104.0 Up 04:43:59 - 05:09:06 894
Tulelake 04:56:36 -46.4 Dark Down 73.2 100.5 Up 04:44:02 - 05:09:09 866
Lakeview 04:56:34 -47.2 Dark Down 74.0 102.6 Up 04:44:00 - 05:09:07 839
Fall River/Burney 04:56:36 -46.6 Dark Down 73.4 97.6 Up 04:44:02 - 05:09:09 783
Cedarville 04:56:35 -47.5 Dark Down 74.2 100.5 Up 04:44:02 - 05:09:09 770
Susanville 04:56:36 -47.3 Dark Down 74.0 96.1 Up 04:44:02 - 05:09:09 691
Greenville 04:56:36 -47.1 Dark Down 73.8 94.9 Up 04:44:02 - 05:09:09 684
Gimple 04:56:36 -47.2 Dark Down 73.9 95.0 Up 04:44:02 - 05:09:09 679
Quincy 04:56:36 -47.2 Dark Down 73.9 94.2 Up 04:44:02 - 05:09:09 667
Portola 04:56:36 -47.5 Dark Down 74.2 94.2 Up 04:44:02 - 05:09:09 630
Reno 04:56:36 -48.1 Dark Down 74.8 93.8 Up 04:44:02 - 05:09:09 573
Carson City 04:56:36 -48.1 Dark Down 74.8 92.5 Up 04:44:02 - 05:09:09 541
Gardnerville 04:56:36 -48.2 Dark Down 74.8 91.6 Up 04:44:02 - 05:09:09 519
Yerington 04:56:36 -48.7 Dark Down 75.3 92.2 Up 04:44:02 - 05:09:09 491
Hawthorne 04:56:36 -49.1 Dark Down 75.7 90.8 Up 04:44:02 - 05:09:09 423
Lee Vining 04:56:36 -48.8 Dark Down 75.3 88.3 Up 04:44:02 - 05:09:09 405
Tonopah 04:56:34 -50.3 Dark Down 76.8 89.8 Up 04:44:01 - 05:09:08 315
Bishop 04:56:36 -49.5 Dark Down 75.9 86.3 Up 04:44:02 - 05:09:09 314
Lone Pine 04:56:36 -49.8 Dark Down 76.1 83.4 Up 04:44:02 - 05:09:09 241
CPSLO 04:56:55 -47.9 Dark Down 73.8 78.4 Up 04:44:21 - 05:09:28 201
Beatty 04:56:36 -50.8 Dark Down 77.1 85.0 Up 04:44:02 - 05:09:09 183
Indian Springs 04:56:33 -51.7 Dark Down 78.0 83.8 Up 04:43:59 - 05:09:06 106
Niwot 04:55:42 -58.6 Dark Down 85.1 129.1 Up 04:43:09 - 05:08:16 71
Henderson 04:56:31 -52.4 Dark Down 78.4 81.3 Up 04:43:58 - 05:09:05 25
Wildwood 04:56:51 -49.7 Dark Down 75.2 73.8 Up 04:44:17 - 05:09:24 -8
Searchlight/Boulder City 04:56:33 -52.5 Dark Down 78.4 78.5 Up 04:43:59 - 05:09:06 -35
Laughlin/Bullhead City 04:56:32 -52.8 Dark Down 78.6 77.0 Up 04:43:58 - 05:09:05 -78
Patrick 04:56:28 -53.3 Dark Down 79.2 78.0 Up 04:43:55 - 05:09:02 -83
Kingman/Dolan Springs 04:56:29 -53.2 Dark Down 79.0 76.9 Up 04:43:56 - 05:09:03 -98
Mohave Valley 04:56:33 -52.8 Dark Down 78.5 75.7 Up 04:43:59 - 05:09:06 -105
DCO 04:56:26 -53.9 Dark Down 79.7 76.1 Up 04:43:53 - 05:09:00 -143
Lake Havasu City 04:56:33 -53.1 Dark Down 78.6 73.7 Up 04:43:59 - 05:09:06 -155
Parker 04:56:33 -53.2 Dark Down 78.6 72.0 Up 04:44:00 - 05:09:07 -191
Idyllwild 04:56:36 -51.2 Dark Down 76.5 71.7 Up 04:44:02 - 05:09:09 -209
Blythe 04:56:36 -53.0 Dark Down 78.2 69.8 Up 04:44:02 - 05:09:09 -230
Calipatria 04:56:36 -52.2 Dark Down 77.3 68.4 Up 04:44:02 - 05:09:09 -260
Yuma 04:56:36 -53.0 Dark Down 77.8 65.8 Up 04:44:02 - 05:09:09 -324

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 14UT114, (2019/12/28 04:55UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 20.44 130
3Iot Aur       04:56:59.6 +33:09:58  2.7  5.20 136
PPM 069587     04:41:50.6 +38:16:47  6.2  1.42 133
PPM 069579     04:40:44.6 +36:50:59  8.5  0.26 133
PPM 069567     04:39:19.1 +36:50:45  9.7  0.10 133
14UT114        04:39:30.6 +36:56:03 16.4       133
Positions are for J2000

Event circumstances last updated at 2018/01/01 18:30:34 UT

Marc W. Buie, Southwest Research Institute

RECON