RECON: TNO occultation with 03QX111

Event between 03QX111 and star GA0900:00112242 with event index number of 1548981

Geocentric closest approach at 2020/10/31 05:26:42 UTC

J2000 position of star is 01:18:34.3 +01:16:21
Equinox of date position of star is 01:19:36.6 +01:22:42
Stellar brightness G=14.4, use SENSEUP=128
Star is 16 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=26.2

[RECON map]
TNO is 41.5 AU from the Sun and 40.5 AU from the Earth.
The TNO is moving 23.7 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 155 seconds.
The 1-sigma cross-track error in the shadow position is 2014 km.
The sky-plane scale is 29406.3 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=241.0 km assuming a 5% albedo -- 2.5 sec chord
Diameter=98.4 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 03QX111, (2020/10/31 05:27UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:47.8 -29:30:41  1.2 45.66  61
68Omi Cet      02:20:24.0 -02:53:03  2.0 15.77  12
42 Cet         01:20:52.3 -00:24:00  6.5  1.81  16
PPM 144455     01:18:46.8 +01:15:40  8.2  0.25  16
03QX111        01:19:38.6 +01:22:54 14.4        15
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 15.2 km RECON observability=1.0 and success probability=16.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 05:26:20 -44.9 Dark Up 38.8 157.4 Up 05:12:57 - 05:39:43 2422
Victoria 05:26:34 -43.8 Dark Up 39.3 151.8 Up 05:13:11 - 05:39:57 2418
Peachland 05:26:22 -45.0 Dark Up 39.2 156.7 Up 05:12:59 - 05:39:45 2403
Kelowna 05:26:21 -45.0 Dark Up 39.2 157.1 Up 05:12:58 - 05:39:44 2402
Summerland 05:26:22 -45.1 Dark Up 39.4 156.8 Up 05:12:59 - 05:39:45 2392
Penticton 05:26:22 -45.2 Dark Up 39.4 156.9 Up 05:12:59 - 05:39:45 2385
Oliver 05:26:23 -45.4 Dark Up 39.8 156.8 Up 05:13:00 - 05:39:46 2363
Anarchist Mountain Observatory 05:26:22 -45.6 Dark Up 40.0 157.0 Up 05:12:59 - 05:39:45 2349
Tonasket 05:26:23 -45.8 Dark Up 40.2 156.8 Up 05:13:00 - 05:39:46 2331
Okanogan 05:26:24 -45.9 Dark Up 40.5 156.5 Up 05:13:01 - 05:39:47 2314
Brewster 05:26:26 -46.0 Dark Up 40.7 156.2 Up 05:13:03 - 05:39:49 2302
Manson/Chelan 05:26:27 -45.9 Dark Up 40.8 155.6 Up 05:13:04 - 05:39:50 2298
Entiat 05:26:28 -46.0 Dark Up 41.0 155.5 Up 05:13:05 - 05:39:51 2286
Wenatchee 05:26:28 -46.2 Dark Up 41.2 155.3 Up 05:13:05 - 05:39:51 2273
Ellensburg 05:26:30 -46.3 Dark Up 41.5 154.8 Up 05:13:07 - 05:39:53 2252
Yakima 05:26:31 -46.5 Dark Up 41.9 154.7 Up 05:13:08 - 05:39:54 2227
Toppenish/White Swan 05:26:31 -46.7 Dark Up 42.1 154.8 Up 05:13:08 - 05:39:54 2208
Goldendale 05:26:33 -46.8 Dark Up 42.5 154.0 Up 05:13:10 - 05:39:56 2184
The Dalles 05:26:35 -46.8 Dark Up 42.6 153.5 Up 05:13:12 - 05:39:58 2178
Pasco 05:26:27 -47.5 Dark Up 42.6 156.4 Up 05:13:04 - 05:39:50 2167
Maupin 05:26:36 -47.1 Dark Up 43.0 153.4 Up 05:13:13 - 05:39:59 2148
PNWRO 05:26:27 -47.8 Dark Up 42.9 156.6 Up 05:13:04 - 05:39:50 2145
Sisters 05:26:39 -47.3 Dark Up 43.6 152.4 Up 05:13:16 - 05:40:02 2103
Redmond 05:26:38 -47.5 Dark Up 43.8 153.0 Up 05:13:15 - 05:40:01 2091
Bend 05:26:39 -47.6 Dark Up 43.9 152.7 Up 05:13:16 - 05:40:02 2080
Oregon Observatory 05:26:39 -47.6 Dark Up 44.0 152.4 Up 05:13:16 - 05:40:02 2072
La Pine/Gilchrist 05:26:40 -47.6 Dark Up 44.2 152.3 Up 05:13:17 - 05:40:03 2060
North Lake 05:26:39 -48.3 Dark Up 44.8 152.9 Up 05:13:16 - 05:40:02 2014
Klamath Falls 05:26:44 -48.3 Dark Up 45.4 151.2 Up 05:13:21 - 05:40:07 1967
Paisley 05:26:39 -48.8 Dark Up 45.4 153.1 Up 05:13:16 - 05:40:02 1966
Lakeview 05:26:40 -49.2 Dark Up 45.9 153.1 Up 05:13:17 - 05:40:03 1925
Cedarville 05:26:41 -49.6 Dark Up 46.5 153.1 Up 05:13:18 - 05:40:04 1873
Fall River/Burney 05:26:46 -49.1 Dark Up 46.5 151.2 Up 05:13:23 - 05:40:09 1873
Susanville 05:26:45 -49.9 Dark Up 47.4 151.9 Up 05:13:22 - 05:40:08 1806
Greenville 05:26:46 -49.9 Dark Up 47.5 151.3 Up 05:13:23 - 05:40:09 1795
Gimple 05:26:46 -49.9 Dark Up 47.5 151.4 Up 05:13:23 - 05:40:09 1792
Quincy 05:26:47 -50.0 Dark Up 47.7 151.2 Up 05:13:24 - 05:40:10 1780
Portola 05:26:45 -50.3 Dark Up 48.0 151.8 Up 05:13:22 - 05:40:08 1757
Reno 05:26:44 -50.9 Dark Up 48.4 152.6 Up 05:13:21 - 05:40:07 1719
Carson City 05:26:44 -51.1 Dark Up 48.8 152.4 Up 05:13:21 - 05:40:07 1691
Gardnerville 05:26:45 -51.3 Dark Up 49.0 152.4 Up 05:13:22 - 05:40:08 1672
Yerington 05:26:43 -51.6 Dark Up 49.2 153.2 Up 05:13:20 - 05:40:06 1658
Hawthorne 05:26:42 -52.2 Dark Up 49.8 153.7 Up 05:13:19 - 05:40:05 1607
Lee Vining 05:26:45 -52.2 Dark Up 50.1 152.7 Up 05:13:22 - 05:40:08 1579
Tonopah 05:26:38 -53.4 Dark Up 50.7 155.6 Up 05:13:15 - 05:40:01 1530
Bishop 05:26:44 -53.0 Dark Up 50.9 153.5 Up 05:13:21 - 05:40:07 1511
Beatty 05:26:39 -54.3 Dark Up 51.9 155.7 Up 05:13:16 - 05:40:02 1425
CPSLO 05:26:56 -52.3 Dark Up 51.8 149.0 Up 05:13:33 - 05:40:19 1418
Indian Springs 05:26:36 -55.2 Dark Up 52.5 157.1 Up 05:13:13 - 05:39:59 1366
Niwot 05:25:55 -59.0 Dark Up 51.0 174.7 Up 05:12:32 - 05:39:18 1330
SwRI 05:25:55 -59.0 Dark Up 51.1 174.5 Up 05:12:32 - 05:39:18 1325
Henderson 05:26:35 -56.0 Dark Up 53.2 158.0 Up 05:13:12 - 05:39:58 1302
Wildwood 05:26:51 -54.4 Dark Up 53.7 151.2 Up 05:13:28 - 05:40:14 1257
Searchlight/Boulder City 05:26:36 -56.3 Dark Up 53.8 157.8 Up 05:13:13 - 05:39:59 1254
Laughlin/Bullhead City 05:26:35 -56.7 Dark Up 54.1 158.2 Up 05:13:12 - 05:39:58 1219
Patrick 05:26:32 -57.1 Dark Up 54.1 159.4 Up 05:13:09 - 05:39:55 1217
Kingman/Dolan Springs 05:26:33 -57.1 Dark Up 54.3 159.0 Up 05:13:10 - 05:39:56 1205
Mohave Valley 05:26:36 -56.9 Dark Up 54.4 158.0 Up 05:13:13 - 05:39:59 1196
DCO 05:26:30 -57.7 Dark Up 54.6 160.4 Up 05:13:07 - 05:39:53 1170
Idyllwild 05:26:45 -55.9 Dark Up 54.7 154.0 Up 05:13:22 - 05:40:08 1169
Lake Havasu City 05:26:36 -57.2 Dark Up 54.8 158.2 Up 05:13:13 - 05:39:59 1155
Parker 05:26:36 -57.5 Dark Up 55.2 158.1 Up 05:13:13 - 05:39:59 1125
Blythe 05:26:38 -57.5 Dark Up 55.6 157.3 Up 05:13:15 - 05:40:01 1091
Calipatria 05:26:42 -57.1 Dark Up 55.7 155.5 Up 05:13:19 - 05:40:05 1080
Yuma 05:26:40 -57.9 Dark Up 56.4 156.7 Up 05:13:17 - 05:40:03 1015
George/Scottsdale 05:26:28 -59.4 Dark Up 56.3 162.0 Up 05:13:05 - 05:39:51 1012

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 03QX111, (2020/10/31 05:27UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:23  1.2 45.66  61
68Omi Cet      02:19:20.8 -02:58:45  2.0 15.77  12
42 Cet         01:19:48.4 -00:30:32  6.5  1.81  16
PPM 144455     01:17:42.6 +01:09:07  8.2  0.25  16
03QX111        01:18:34.3 +01:16:21 14.4        16
Positions are for J2000

Event circumstances last updated at 2020/03/08 21:00:46 UT

Marc W. Buie, Southwest Research Institute

RECON