RECON: TNO occultation with 472262

Event between (472262) 14QN441 and star UC4-427-003442 with event index number of 179444

Geocentric closest approach at 2019/02/04 02:44:00 UTC

J2000 position of star is 02:49:02.1 -04:44:46
Equinox of date position of star is 02:49:53.4 -04:40:33
Stellar brightness R=15.9, use SENSEUP=128
Star is 91 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=22.0

[RECON map]
TNO is 33.3 AU from the Sun and 33.4 AU from the Earth.
The TNO is moving 13.2 km/sec on the sky relative to the star, or, 2.0 arcsec/hr.
The 1-sigma error in the time of the event is 110 seconds.
The 1-sigma cross-track error in the shadow position is 1962 km.
The sky-plane scale is 24235.7 km/arcsec.

The TNO has an absolute magnitude Hv=6.6
Diameter=288.4 km assuming a 5% albedo -- 21.9 sec chord
Diameter=117.7 km assuming a 30% albedo -- 8.9 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 472262, (2019/02/04 02:44UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:01.1 +16:32:47  0.8 33.91 123
68Omi Cet      02:20:18.7 -02:53:30  2.0  7.61  85
PPM 185207     02:57:35.0 -03:38:11  5.2  2.16  93
PPM 185094     02:51:18.7 -04:54:30  7.7  0.41  91
PPM 185057     02:49:38.6 -04:34:00  9.4  0.13  91
472262         02:49:59.4 -04:40:04 15.9        91
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 11.1 km RECON observability=1.0 and success probability=20.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 02:50:29 -18.6 Dark Down 34.8 198.2 Up 02:40:48 - 03:00:09 1507
Manson/Chelan 02:50:23 -18.0 Dark Down 35.9 197.5 Up 02:40:43 - 03:00:04 1506
Entiat 02:50:22 -17.9 AT Down 36.1 197.5 Up 02:40:41 - 03:00:02 1501
Wenatchee 02:50:21 -17.8 AT Down 36.4 197.4 Up 02:40:40 - 03:00:01 1496
Tonasket 02:50:28 -18.6 Dark Down 35.0 198.2 Up 02:40:48 - 03:00:09 1496
Ellensburg 02:50:18 -17.7 AT Down 36.8 197.2 Up 02:40:38 - 02:59:59 1493
Brewster 02:50:25 -18.3 Dark Down 35.6 197.9 Up 02:40:44 - 03:00:05 1491
Okanogan 02:50:26 -18.4 Dark Down 35.3 198.1 Up 02:40:46 - 03:00:07 1490
Yakima 02:50:17 -17.6 AT Down 37.2 197.3 Up 02:40:36 - 02:59:57 1476
The Dalles 02:50:11 -17.1 AT Down 38.3 196.7 Up 02:40:30 - 02:59:51 1475
Goldendale 02:50:13 -17.3 AT Down 38.0 197.1 Up 02:40:32 - 02:59:53 1459
Toppenish/White Swan 02:50:16 -17.7 AT Down 37.4 197.5 Up 02:40:36 - 02:59:57 1454
Maupin 02:50:09 -17.1 AT Down 38.7 196.9 Up 02:40:29 - 02:59:50 1448
Sisters 02:50:04 -16.6 AT Down 39.7 196.5 Up 02:40:23 - 02:59:44 1445
Madras/Culver 02:50:07 -17.0 AT Down 39.2 197.0 Up 02:40:26 - 02:59:47 1427
Oregon Observatory 02:50:03 -16.7 AT Down 40.0 196.7 Up 02:40:22 - 02:59:43 1417
Bend 02:50:04 -16.8 AT Down 39.8 196.9 Up 02:40:23 - 02:59:44 1415
Redmond 02:50:05 -16.9 AT Down 39.6 197.0 Up 02:40:24 - 02:59:45 1415
La Pine/Gilchrist 02:50:01 -16.6 AT Down 40.2 196.7 Up 02:40:21 - 02:59:42 1412
Chiloquin 02:49:56 -16.2 AT Down 41.4 196.5 Up 02:40:15 - 02:59:36 1389
Klamath Falls 02:49:54 -16.2 AT Down 41.7 196.7 Up 02:40:13 - 02:59:34 1368
Pasco 02:50:18 -18.6 Dark Down 37.2 199.1 Up 02:40:38 - 02:59:59 1360
George/Umatilla 02:50:17 -18.4 Dark Down 37.6 198.9 Up 02:40:36 - 02:59:57 1360
North Lake 02:50:01 -17.0 AT Down 40.5 197.6 Up 02:40:20 - 02:59:41 1348
PNWRO 02:50:17 -18.7 Dark Down 37.4 199.5 Up 02:40:37 - 02:59:58 1333
Tulelake 02:49:53 -16.4 AT Down 41.9 197.1 Up 02:40:12 - 02:59:33 1333
Paisley 02:49:59 -17.2 AT Down 41.0 198.2 Up 02:40:19 - 02:59:40 1297
Fall River/Burney 02:49:49 -16.3 AT Down 42.7 197.5 Up 02:40:09 - 02:59:30 1286
Lakeview 02:49:57 -17.2 AT Down 41.4 198.6 Up 02:40:16 - 02:59:37 1259
Cedarville 02:49:54 -17.3 AT Down 42.0 199.0 Up 02:40:14 - 02:59:35 1215
Greenville 02:49:46 -16.5 AT Down 43.5 198.3 Up 02:40:05 - 02:59:26 1210
Gimple 02:49:46 -16.6 AT Down 43.5 198.4 Up 02:40:06 - 02:59:27 1204
Quincy 02:49:45 -16.5 AT Down 43.7 198.4 Up 02:40:04 - 02:59:25 1200
Susanville 02:49:48 -16.8 AT Down 43.2 198.6 Up 02:40:08 - 02:59:29 1200
Portola 02:49:46 -16.8 AT Down 43.7 199.1 Up 02:40:05 - 02:59:26 1158
Reno 02:49:46 -17.3 AT Down 43.8 200.0 Up 02:40:05 - 02:59:26 1095
Carson City 02:49:44 -17.2 AT Down 44.1 200.1 Up 02:40:04 - 02:59:25 1076
Gardnerville 02:49:43 -17.2 AT Down 44.3 200.3 Up 02:40:02 - 02:59:23 1061
Yerington 02:49:45 -17.7 AT Down 44.1 201.1 Up 02:40:04 - 02:59:25 1018
Lee Vining 02:49:39 -17.6 AT Down 45.1 201.5 Up 02:39:59 - 02:59:20 965
CPSLO 02:49:21 -15.9 AT Down 48.0 200.2 Up 02:39:40 - 02:59:01 962
Hawthorne 02:49:43 -18.1 Dark Down 44.4 201.9 Up 02:40:03 - 02:59:24 954
Bishop 02:49:38 -18.1 Dark Down 45.4 202.7 Up 02:39:57 - 02:59:18 878
Tonopah 02:49:45 -19.1 Dark Down 44.4 204.0 Up 02:40:04 - 02:59:25 820
Lone Pine 02:49:34 -18.2 Dark Down 46.0 203.4 Up 02:39:54 - 02:59:15 814
Wildwood 02:49:19 -17.4 AT Down 48.5 203.6 Up 02:39:39 - 02:59:00 734
Beatty 02:49:39 -19.3 Dark Down 45.3 205.0 Up 02:39:59 - 02:59:20 725
Indian Springs 02:49:40 -20.2 Dark Down 45.2 206.6 Up 02:40:00 - 02:59:21 623
Idyllwild 02:49:22 -18.9 Dark Down 48.2 206.5 Up 02:39:42 - 02:59:03 561
Henderson 02:49:39 -20.7 Dark Down 45.4 207.8 Up 02:39:58 - 02:59:19 540
Searchlight/Boulder City 02:49:36 -20.6 Dark Down 45.9 208.1 Up 02:39:56 - 02:59:17 505
Laughlin/Bullhead City 02:49:35 -20.9 Dark Down 46.1 208.7 Up 02:39:55 - 02:59:16 461
Mohave Valley 02:49:34 -20.9 Dark Down 46.3 208.9 Up 02:39:53 - 02:59:14 446
Calipatria 02:49:21 -19.8 Dark Down 48.3 208.4 Up 02:39:41 - 02:59:02 431
Kingman/Dolan Springs 02:49:36 -21.3 Dark Down 45.8 209.4 Up 02:39:56 - 02:59:17 421
Patrick 02:49:38 -21.5 Dark Down 45.6 209.6 Up 02:39:58 - 02:59:19 418
Lake Havasu City 02:49:32 -21.0 Dark Down 46.5 209.4 Up 02:39:52 - 02:59:13 405
Parker 02:49:30 -21.0 Dark Down 46.8 209.6 Up 02:39:50 - 02:59:11 384
Blythe 02:49:27 -20.7 Dark Down 47.4 209.5 Up 02:39:46 - 02:59:07 380
DCO 02:49:38 -22.1 Dark Down 45.5 210.6 Up 02:39:58 - 02:59:19 345
Yuma 02:49:21 -20.5 Dark Down 48.3 209.9 Up 02:39:41 - 02:59:02 335
Niwot 02:50:21 -28.6 Dark Down 37.8 217.9 Up 02:40:40 - 03:00:01 42

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 472262, (2019/02/04 02:44UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 33.91 123
68Omi Cet      02:19:20.8 -02:58:44  2.0  7.61  85
PPM 185207     02:56:37.4 -03:42:45  5.2  2.16  93
PPM 185094     02:50:21.5 -04:59:11  7.7  0.41  91
PPM 185057     02:48:41.2 -04:38:43  9.4  0.13  91
472262         02:49:02.1 -04:44:46 15.9        91
Positions are for J2000

Event circumstances last updated at 2017/02/01 18:27:58 UT

Marc W. Buie, Southwest Research Institute

RECON