RECON: TNO occultation with 470083

Event between (470083) 06SG369 and star GA1080:00976537 with event index number of 2218831

Geocentric closest approach at 2027/12/30 09:33:18 UTC

J2000 position of star is 05:22:24.3 +18:19:24
Equinox of date position of star is 05:23:49.2 +18:20:42
Stellar brightness G=15.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 134 degrees from the moon. Moon is 6% illuminated.
Apparent brightness V=22.9

[RECON map]
Object is 33.3 AU from the Sun and 32.4 AU from the Earth.
Apparent velocity is 23.4 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 140 seconds.
The 1-sigma cross-track error in the shadow position is 1496 km.
The sky-plane scale is 23482.0 km/arcsec.

The object has an absolute magnitude Hv=7.7
Diameter=178.7 km assuming a 5% albedo -- 7.4 sec chord
Diameter=72.9 km assuming a 30% albedo -- 3.0 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 

Star training set for 470083, (2027/12/30 09:36UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:31.8 +16:33:49  0.8 11.23 123
Alnath         05:28:03.8 +28:37:43  1.6 10.32 136
111 Tau        05:26:03.4 +17:24:25  5.5  1.06 135
PPM 120901     05:25:09.2 +18:37:30  8.4  0.38 134
PPM 120880     05:23:55.7 +18:14:14  9.7  0.11 134
470083         05:24:02.6 +18:20:54 15.8       135
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 27.5 km RECON observability=1.0 and success probability=0.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 09:31:06 -50.0 Dark Down 35.7 253.0 Up 09:18:54 - 09:43:17 5276
Kamloops 09:31:30 -57.7 Dark Down 44.5 239.8 Up 09:19:19 - 09:43:42 4912
Kelowna 09:31:26 -57.9 Dark Down 44.4 241.4 Up 09:19:15 - 09:43:38 4856
Peachland 09:31:27 -58.1 Dark Down 44.6 241.2 Up 09:19:15 - 09:43:38 4841
Summerland 09:31:26 -58.2 Dark Down 44.6 241.4 Up 09:19:15 - 09:43:38 4830
Penticton 09:31:25 -58.2 Dark Down 44.6 241.6 Up 09:19:14 - 09:43:37 4826
Oliver 09:31:24 -58.4 Dark Down 44.8 241.9 Up 09:19:13 - 09:43:36 4795
Anarchist Mountain Observatory 09:31:24 -58.5 Dark Down 44.7 242.3 Up 09:19:12 - 09:43:35 4783
Okanogan 09:31:23 -59.1 Dark Down 45.2 242.6 Up 09:19:11 - 09:43:34 4722
Brewster 09:31:23 -59.3 Dark Down 45.4 242.6 Up 09:19:11 - 09:43:34 4695
Victoria 09:31:32 -60.6 Dark Down 47.3 238.3 Up 09:19:21 - 09:43:44 4675
Manson/Chelan 09:31:23 -59.7 Dark Down 45.7 242.4 Up 09:19:12 - 09:43:35 4670
Wenatchee 09:31:23 -60.1 Dark Down 46.0 242.7 Up 09:19:11 - 09:43:34 4625
Ellensburg 09:31:22 -60.5 Dark Down 46.4 242.8 Up 09:19:11 - 09:43:34 4584
Yakima 09:31:21 -60.8 Dark Down 46.6 243.2 Up 09:19:09 - 09:43:32 4547
Toppenish/White Swan 09:31:20 -60.9 Dark Down 46.6 243.6 Up 09:19:09 - 09:43:32 4530
PNWRO 09:31:16 -60.4 Dark Down 45.8 245.4 Up 09:19:04 - 09:43:27 4522
The Dalles 09:31:20 -61.8 Dark Down 47.4 243.5 Up 09:19:09 - 09:43:32 4445
Maupin 09:31:19 -62.1 Dark Down 47.5 244.0 Up 09:19:08 - 09:43:31 4408
Sisters 09:31:18 -62.9 Dark Down 48.2 244.4 Up 09:19:07 - 09:43:30 4318
Bend 09:31:17 -63.0 Dark Down 48.2 244.9 Up 09:19:06 - 09:43:29 4301
Oregon Observatory 09:31:17 -63.2 Dark Down 48.3 244.9 Up 09:19:06 - 09:43:29 4282
Dunrhomin 09:30:30 -54.6 Dark Down 37.9 262.2 Up 09:18:19 - 09:42:42 4273
Nikitin 09:30:30 -54.7 Dark Down 37.9 262.3 Up 09:18:18 - 09:42:41 4255
CU-SBO 09:30:29 -54.8 Dark Down 38.0 262.3 Up 09:18:18 - 09:42:41 4247
Chiloquin 09:31:16 -64.3 Dark Down 49.1 245.8 Up 09:19:04 - 09:43:27 4151
Klamath Falls 09:31:15 -64.5 Dark Down 49.2 246.3 Up 09:19:03 - 09:43:26 4119
Cedarville 09:31:09 -64.0 Dark Down 48.4 248.6 Up 09:18:58 - 09:43:21 4082
Fall River/Burney 09:31:11 -65.0 Dark Down 49.4 247.9 Up 09:19:00 - 09:43:23 4013
Gimple 09:31:08 -65.3 Dark Down 49.4 249.4 Up 09:18:57 - 09:43:20 3935
Greenville 09:31:08 -65.3 Dark Down 49.5 249.3 Up 09:18:57 - 09:43:20 3933
Quincy 09:31:08 -65.4 Dark Down 49.5 249.5 Up 09:18:56 - 09:43:19 3914
Portola 09:31:06 -65.2 Dark Down 49.2 250.1 Up 09:18:55 - 09:43:18 3911
Reno 09:31:04 -65.0 Dark Down 48.9 251.0 Up 09:18:53 - 09:43:16 3897
Carson City 09:31:03 -65.2 Dark Down 49.0 251.4 Up 09:18:52 - 09:43:15 3862
Yerington 09:31:01 -64.9 Dark Down 48.6 252.2 Up 09:18:50 - 09:43:13 3856
Gardnerville 09:31:03 -65.3 Dark Down 49.0 251.7 Up 09:18:51 - 09:43:14 3839
Hawthorne 09:30:59 -64.8 Dark Down 48.3 253.2 Up 09:18:47 - 09:43:10 3820
Lee Vining 09:30:59 -65.4 Dark Down 48.8 253.3 Up 09:18:47 - 09:43:10 3756
Bishop 09:30:55 -65.2 Dark Down 48.5 254.6 Up 09:18:44 - 09:43:07 3711
Beatty 09:30:50 -64.2 Dark Down 47.3 256.4 Up 09:18:39 - 09:43:02 3699
Patrick 09:30:39 -62.7 Dark Down 45.4 260.1 Up 09:18:28 - 09:42:51 3613
Laughlin/Bullhead City 09:30:41 -63.3 Dark Down 46.0 259.9 Up 09:18:29 - 09:42:52 3573
Lake Havasu City 09:30:39 -63.3 Dark Down 45.9 260.7 Up 09:18:27 - 09:42:50 3512
George/Scottsdale 09:30:31 -61.6 Dark Down 44.0 263.2 Up 09:18:19 - 09:42:42 3490
Idyllwild 09:30:44 -65.4 Dark Down 48.0 259.9 Up 09:18:33 - 09:42:56 3384
Wildwood 09:30:50 -66.7 Dark Down 49.4 258.1 Up 09:18:39 - 09:43:02 3380
Calipatria 09:30:39 -64.7 Dark Down 47.1 261.3 Up 09:18:28 - 09:42:51 3348
Yuma 09:30:36 -64.1 Dark Down 46.4 262.4 Up 09:18:25 - 09:42:48 3324

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 470083, (2027/12/30 09:36UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 11.23 123
Alnath         05:26:17.6 +28:36:23  1.6 10.32 136
111 Tau        05:24:25.8 +17:23:01  5.5  1.06 135
PPM 120901     05:23:30.6 +18:36:03  8.4  0.38 134
PPM 120880     05:22:17.5 +18:12:44  9.7  0.11 134
470083         05:22:24.3 +18:19:24 15.8       134
Positions are for J2000

Event circumstances last updated at 2024/03/06 04:35:39 UT

Marc W. Buie, Southwest Research Institute

RECON