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 02:41:13 UTC

J2000 position of star is 02:49:02.1 -04:44:46
Equinox of date position of star is 02:49:55.9 -04:40:21
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 129 seconds.
The 1-sigma cross-track error in the shadow position is 1915 km.
The sky-plane scale is 24235.5 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 02:41UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:01.1 +16:32:46  0.8 33.91 123
68Omi Cet      02:20:18.7 -02:53:31  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 11.9 km RECON observability=1.0 and success probability=1.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Manson/Chelan 02:47:41 -17.6 AT Down 36.1 196.7 Up 02:36:29 - 02:58:54 6962
Oroville 02:47:47 -18.1 Dark Down 34.9 197.4 Up 02:36:35 - 02:59:00 6961
Entiat 02:47:41 -17.5 AT Down 36.3 196.7 Up 02:36:29 - 02:58:54 6957
Wenatchee 02:47:39 -17.4 AT Down 36.5 196.6 Up 02:36:27 - 02:58:52 6953
Tonasket 02:47:47 -18.1 Dark Down 35.1 197.4 Up 02:36:35 - 02:59:00 6950
Ellensburg 02:47:38 -17.2 AT Down 37.0 196.4 Up 02:36:25 - 02:58:50 6950
Brewster 02:47:43 -17.8 AT Down 35.8 197.1 Up 02:36:31 - 02:58:56 6947
Okanogan 02:47:44 -18.0 AT Down 35.5 197.3 Up 02:36:32 - 02:58:57 6945
The Dalles 02:47:31 -16.6 AT Down 38.5 195.9 Up 02:36:18 - 02:58:43 6933
Yakima 02:47:35 -17.1 AT Down 37.4 196.5 Up 02:36:23 - 02:58:48 6933
Goldendale 02:47:32 -16.9 AT Down 38.2 196.3 Up 02:36:20 - 02:58:45 6917
Toppenish/White Swan 02:47:36 -17.2 AT Down 37.5 196.7 Up 02:36:23 - 02:58:48 6912
Maupin 02:47:29 -16.6 AT Down 38.8 196.1 Up 02:36:16 - 02:58:41 6908
Sisters 02:47:24 -16.1 AT Down 39.8 195.6 Up 02:36:11 - 02:58:36 6905
Madras/Culver 02:47:26 -16.5 AT Down 39.4 196.2 Up 02:36:14 - 02:58:39 6887
Oregon Observatory 02:47:22 -16.2 AT Down 40.2 195.9 Up 02:36:10 - 02:58:35 6878
Bend 02:47:23 -16.3 AT Down 40.0 196.0 Up 02:36:11 - 02:58:36 6876
Redmond 02:47:25 -16.4 AT Down 39.7 196.2 Up 02:36:12 - 02:58:37 6875
La Pine/Gilchrist 02:47:21 -16.1 AT Down 40.4 195.9 Up 02:36:09 - 02:58:34 6873
Chiloquin 02:47:15 -15.7 AT Down 41.5 195.6 Up 02:36:03 - 02:58:28 6851
Klamath Falls 02:47:13 -15.7 AT Down 41.8 195.8 Up 02:36:01 - 02:58:26 6830
George/Umatilla 02:47:36 -17.9 AT Down 37.8 198.1 Up 02:36:24 - 02:58:49 6818
Pasco 02:47:38 -18.1 Dark Down 37.4 198.3 Up 02:36:25 - 02:58:50 6818
North Lake 02:47:20 -16.5 AT Down 40.7 196.7 Up 02:36:08 - 02:58:33 6810
Tulelake 02:47:13 -15.9 AT Down 42.0 196.3 Up 02:36:00 - 02:58:25 6796
PNWRO 02:47:37 -18.2 Dark Down 37.6 198.7 Up 02:36:24 - 02:58:49 6791
Paisley 02:47:19 -16.7 AT Down 41.1 197.3 Up 02:36:06 - 02:58:31 6759
Fall River/Burney 02:47:09 -15.8 AT Down 42.9 196.6 Up 02:35:56 - 02:58:21 6750
Lakeview 02:47:16 -16.7 AT Down 41.6 197.7 Up 02:36:04 - 02:58:29 6721
Cedarville 02:47:14 -16.8 AT Down 42.1 198.1 Up 02:36:02 - 02:58:27 6678
Greenville 02:47:05 -16.0 AT Down 43.7 197.4 Up 02:35:53 - 02:58:18 6675
Gimple 02:47:07 -16.1 AT Down 43.6 197.5 Up 02:35:54 - 02:58:19 6668
Quincy 02:47:04 -16.0 AT Down 43.8 197.5 Up 02:35:51 - 02:58:16 6666
Susanville 02:47:07 -16.3 AT Down 43.3 197.7 Up 02:35:55 - 02:58:20 6665
Portola 02:47:05 -16.3 AT Down 43.9 198.2 Up 02:35:52 - 02:58:17 6623
Reno 02:47:05 -16.8 AT Down 43.9 199.1 Up 02:35:52 - 02:58:17 6560
Carson City 02:47:04 -16.7 AT Down 44.3 199.2 Up 02:35:51 - 02:58:16 6542
Gardnerville 02:47:02 -16.7 AT Down 44.5 199.4 Up 02:35:49 - 02:58:14 6527
Yerington 02:47:04 -17.2 AT Down 44.3 200.2 Up 02:35:52 - 02:58:17 6483
CPSLO 02:46:41 -15.4 AT Down 48.2 199.2 Up 02:35:28 - 02:57:53 6432
Lee Vining 02:46:59 -17.1 AT Down 45.3 200.5 Up 02:35:47 - 02:58:12 6432
Hawthorne 02:47:03 -17.5 AT Down 44.6 201.0 Up 02:35:50 - 02:58:15 6420
Bishop 02:46:58 -17.6 AT Down 45.6 201.7 Up 02:35:45 - 02:58:10 6345
Tonopah 02:47:04 -18.6 Dark Down 44.6 203.1 Up 02:35:51 - 02:58:16 6286
Lone Pine 02:46:54 -17.7 AT Down 46.2 202.5 Up 02:35:42 - 02:58:07 6282
Wildwood 02:46:40 -16.9 AT Down 48.7 202.7 Up 02:35:28 - 02:57:53 6205
Beatty 02:46:58 -18.8 Dark Down 45.5 204.1 Up 02:35:46 - 02:58:11 6193
Indian Springs 02:46:59 -19.6 Dark Down 45.5 205.7 Up 02:35:47 - 02:58:12 6090
Idyllwild 02:46:43 -18.4 Dark Down 48.4 205.5 Up 02:35:30 - 02:57:55 6031
Henderson 02:46:58 -20.1 Dark Down 45.7 206.9 Up 02:35:46 - 02:58:11 6007
Searchlight/Boulder City 02:46:56 -20.1 Dark Down 46.2 207.2 Up 02:35:43 - 02:58:08 5973
Laughlin/Bullhead City 02:46:55 -20.4 Dark Down 46.3 207.8 Up 02:35:43 - 02:58:08 5929
Mohave Valley 02:46:54 -20.3 Dark Down 46.6 208.0 Up 02:35:41 - 02:58:06 5915
Calipatria 02:46:42 -19.3 Dark Down 48.5 207.5 Up 02:35:30 - 02:57:55 5902
Kingman/Dolan Springs 02:46:57 -20.8 Dark Down 46.1 208.5 Up 02:35:44 - 02:58:09 5889
Patrick 02:46:58 -21.0 Dark Down 45.8 208.7 Up 02:35:45 - 02:58:10 5885
Lake Havasu City 02:46:53 -20.5 Dark Down 46.8 208.5 Up 02:35:40 - 02:58:05 5874
Parker 02:46:50 -20.5 Dark Down 47.1 208.7 Up 02:35:37 - 02:58:02 5853
Blythe 02:46:46 -20.1 Dark Down 47.7 208.6 Up 02:35:34 - 02:57:59 5850
DCO 02:46:59 -21.5 Dark Down 45.8 209.8 Up 02:35:46 - 02:58:11 5812
Yuma 02:46:42 -20.0 Dark Down 48.5 209.0 Up 02:35:30 - 02:57:55 5805
Niwot 02:47:40 -28.1 Dark Down 38.1 217.1 Up 02:36:27 - 02:58:52 5501

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 02:41UT)
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 -04:38:44  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 2017/12/05 19:13:29 UT

Marc W. Buie, Southwest Research Institute

RECON