RECON: TNO occultation with 229762

Event between (229762) G!kun||'homdima and star GA0920:00605662 with event index number of 2299330

Geocentric closest approach at 2021/11/05 11:17:23 UTC

J2000 position of star is 05:10:53.2 +03:00:21
Equinox of date position of star is 05:12:01.8 +03:01:53
Stellar brightness G=16.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 149 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=19.7

[RECON map]
TNO is 41.3 AU from the Sun and 40.5 AU from the Earth.
The TNO is moving 20.4 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 83 seconds.
The 1-sigma cross-track error in the shadow position is 1523 km.
The sky-plane scale is 29394.1 km/arcsec.

The TNO has an absolute magnitude Hv=3.5
Diameter=1174.9 km assuming a 5% albedo -- 57.7 sec chord
Diameter=479.7 km assuming a 30% albedo -- 23.6 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 229762, (2021/11/05 11:18UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:15:35.3 -08:10:41  0.1 11.24 141
Bellatrix      05:26:18.2 +06:22:04  1.6  4.88 147
17Rho Ori      05:14:26.0 +02:53:08  5.8  0.62 148
PPM 148547     05:11:13.5 +02:57:43  8.3  0.21 149
229762         05:12:01.9 +03:01:53 16.7       148
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 23.4 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)
Clarence Fulton 11:15:21 -35.1 Dark Down 40.7 202.3 Up 11:07:54 - 11:22:48 4743
Kelowna 11:15:21 -35.3 Dark Down 41.1 202.2 Up 11:07:54 - 11:22:48 4715
Peachland 11:15:22 -35.5 Dark Down 41.3 201.8 Up 11:07:55 - 11:22:49 4712
Summerland 11:15:22 -35.5 Dark Down 41.4 202.0 Up 11:07:55 - 11:22:49 4699
Penticton 11:15:22 -35.4 Dark Down 41.4 202.2 Up 11:07:55 - 11:22:49 4691
Victoria 11:15:34 -38.1 Dark Down 43.2 197.5 Up 11:08:07 - 11:23:01 4687
Oliver 11:15:22 -35.5 Dark Down 41.7 202.3 Up 11:07:55 - 11:22:49 4663
Anarchist Mountain Observatory 11:15:21 -35.5 Dark Down 41.8 202.6 Up 11:07:54 - 11:22:48 4645
Tonasket 11:15:21 -35.6 Dark Down 42.1 202.6 Up 11:07:54 - 11:22:48 4622
Okanogan 11:15:22 -35.8 Dark Down 42.5 202.5 Up 11:07:55 - 11:22:49 4597
Brewster 11:15:22 -36.0 Dark Down 42.8 202.4 Up 11:07:55 - 11:22:49 4579
Manson/Chelan 11:15:23 -36.3 Dark Down 43.1 202.0 Up 11:07:56 - 11:22:50 4570
Wenatchee 11:15:25 -36.6 Dark Down 43.6 201.9 Up 11:07:58 - 11:22:52 4534
Ellensburg 11:15:26 -36.8 Dark Down 44.0 201.8 Up 11:07:59 - 11:22:53 4505
Yakima 11:15:26 -37.0 Dark Down 44.4 201.9 Up 11:07:59 - 11:22:53 4471
Toppenish/White Swan 11:15:25 -36.9 Dark Down 44.5 202.2 Up 11:07:58 - 11:22:52 4450
Pasco 11:15:21 -36.1 Dark Down 44.3 203.9 Up 11:07:54 - 11:22:48 4413
Goldendale 11:15:27 -37.4 Dark Down 45.2 201.8 Up 11:08:00 - 11:22:54 4412
The Dalles 11:15:27 -37.7 Dark Down 45.5 201.4 Up 11:08:00 - 11:22:54 4401
PNWRO 11:15:20 -36.0 Dark Down 44.5 204.3 Up 11:07:53 - 11:22:47 4388
Maupin 11:15:28 -37.7 Dark Down 45.8 201.7 Up 11:08:01 - 11:22:55 4364
Sisters 11:15:30 -38.3 Dark Down 46.8 201.4 Up 11:08:03 - 11:22:57 4300
Redmond 11:15:29 -38.0 Dark Down 46.7 202.0 Up 11:08:02 - 11:22:56 4289
Bend 11:15:29 -38.2 Dark Down 46.9 201.8 Up 11:08:02 - 11:22:56 4274
Oregon Observatory 11:15:29 -38.3 Dark Down 47.1 201.7 Up 11:08:02 - 11:22:56 4262
La Pine/Gilchrist 11:15:30 -38.4 Dark Down 47.3 201.7 Up 11:08:03 - 11:22:57 4246
North Lake 11:15:27 -38.1 Dark Down 47.6 202.8 Up 11:08:00 - 11:22:54 4195
Chiloquin 11:15:31 -39.0 Dark Down 48.5 201.7 Up 11:08:04 - 11:22:58 4157
Paisley 11:15:27 -38.0 Dark Down 48.0 203.5 Up 11:08:00 - 11:22:54 4139
Klamath Falls 11:15:32 -39.0 Dark Down 48.8 202.0 Up 11:08:05 - 11:22:59 4126
Lakeview 11:15:27 -38.0 Dark Down 48.4 204.0 Up 11:08:00 - 11:22:54 4090
Cedarville 11:15:26 -38.0 Dark Down 48.9 204.6 Up 11:07:59 - 11:22:53 4028
Fall River/Burney 11:15:30 -39.0 Dark Down 49.7 203.0 Up 11:08:03 - 11:22:57 4013
Susanville 11:15:27 -38.6 Dark Down 50.1 204.4 Up 11:08:00 - 11:22:54 3940
Greenville 11:15:29 -38.9 Dark Down 50.4 204.1 Up 11:08:02 - 11:22:56 3922
Gimple 11:15:28 -38.9 Dark Down 50.4 204.2 Up 11:08:01 - 11:22:55 3920
Quincy 11:15:29 -39.0 Dark Down 50.6 204.2 Up 11:08:02 - 11:22:56 3903
Portola 11:15:26 -38.6 Dark Down 50.6 205.0 Up 11:07:59 - 11:22:53 3881
Reno 11:15:25 -38.2 Dark Down 50.6 206.1 Up 11:07:58 - 11:22:52 3842
Carson City 11:15:25 -38.3 Dark Down 50.9 206.3 Up 11:07:58 - 11:22:52 3809
Gardnerville 11:15:25 -38.3 Dark Down 51.1 206.5 Up 11:07:58 - 11:22:52 3785
Yerington 11:15:23 -37.8 Dark Down 50.9 207.3 Up 11:07:56 - 11:22:50 3776
Hawthorne 11:15:21 -37.5 Dark Down 51.1 208.4 Up 11:07:54 - 11:22:48 3721
Lee Vining 11:15:22 -38.0 Dark Down 51.8 208.0 Up 11:07:55 - 11:22:49 3681
Tonopah 11:15:15 -36.5 Dark Down 51.0 210.7 Up 11:07:48 - 11:22:42 3645
Bishop 11:15:21 -37.5 Dark Down 52.0 209.4 Up 11:07:54 - 11:22:48 3608
Dunrhomin 11:14:32 -27.1 Dark Down 43.6 224.7 Up 11:07:05 - 11:21:59 3594
Beatty 11:15:13 -36.3 Dark Down 51.8 212.1 Up 11:07:46 - 11:22:40 3526
Indian Springs 11:15:10 -35.5 Dark Down 51.6 213.9 Up 11:07:43 - 11:22:37 3470
CPSLO 11:15:30 -39.6 Dark Down 54.7 207.3 Up 11:08:03 - 11:22:57 3468
Henderson 11:15:07 -35.0 Dark Down 51.7 215.2 Up 11:07:40 - 11:22:34 3403
Patrick 11:15:03 -34.2 Dark Down 51.7 217.3 Up 11:07:36 - 11:22:30 3317
Laughlin/Bullhead City 11:15:06 -34.8 Dark Down 52.2 216.5 Up 11:07:39 - 11:22:33 3309
Wildwood 11:15:22 -38.1 Dark Down 54.9 211.4 Up 11:07:55 - 11:22:49 3303
Kingman/Dolan Springs 11:15:04 -34.3 Dark Down 51.9 217.2 Up 11:07:37 - 11:22:31 3300
Mohave Valley 11:15:05 -34.8 Dark Down 52.4 216.7 Up 11:07:38 - 11:22:32 3283
Lake Havasu City 11:15:05 -34.6 Dark Down 52.6 217.4 Up 11:07:38 - 11:22:32 3238
Idyllwild 11:15:15 -36.6 Dark Down 54.4 214.5 Up 11:07:48 - 11:22:42 3222
Parker 11:15:05 -34.6 Dark Down 52.9 217.7 Up 11:07:38 - 11:22:32 3203
Blythe 11:15:06 -34.9 Dark Down 53.5 217.7 Up 11:07:39 - 11:22:33 3159
Calipatria 11:15:09 -35.7 Dark Down 54.3 216.7 Up 11:07:42 - 11:22:36 3134
George/Scottsdale 11:14:56 -32.6 Dark Down 52.0 221.4 Up 11:07:29 - 11:22:23 3105
Yuma 11:15:06 -35.0 Dark Down 54.2 218.4 Up 11:07:39 - 11:22:33 3070

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 229762, (2021/11/05 11:18UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:14:32.3 -08:12:06  0.1 11.24 141
Bellatrix      05:25:07.8 +06:20:58  1.6  4.88 147
17Rho Ori      05:13:17.4 +02:51:41  5.8  0.62 148
PPM 148547     05:10:04.9 +02:56:10  8.3  0.21 149
229762         05:10:53.2 +03:00:21 16.7       149
Positions are for J2000

Event circumstances last updated at 2021/10/26 23:49:54 UT

Marc W. Buie, Southwest Research Institute

RECON