RECON: TNO occultation with 04VV130

Event between 04VV130 and star GA1260:01783996 with event index number of 2567385

Geocentric closest approach at 2023/01/17 07:46:44 UTC

J2000 position of star is 05:11:22.7 +37:33:20
Equinox of date position of star is 05:12:56.4 +37:34:55
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 151 degrees from the moon. Moon is 27% illuminated.
Apparent brightness V=22.6

[RECON map]
Object is 32.1 AU from the Sun and 31.3 AU from the Earth.
Apparent velocity is 19.2 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 122 seconds.
The 1-sigma cross-track error in the shadow position is 1651 km.
The sky-plane scale is 22706.6 km/arcsec.

The object has an absolute magnitude Hv=7.5
Diameter=194.1 km assuming a 5% albedo -- 10.1 sec chord
Diameter=79.2 km assuming a 30% albedo -- 4.1 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 04VV130, (2023/01/17 07:47UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:14.7 +16:33:14  0.8 22.45 163
3Iot Aur       04:58:29.9 +33:12:01  2.7  5.28 156
PPM 070048     05:14:51.1 +37:21:44  6.5  0.44 151
PPM 070021     05:13:13.4 +37:49:44  9.5  0.25 151
04VV130        05:12:56.7 +37:34:55 16.9       151
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 32.9 km RECON observability=1.0 and success probability=4.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 07:43:47 -58.1 Dark Down 53.4 266.3 Up 07:33:06 - 07:54:27 5991
Kamloops 07:44:28 -59.6 Dark Down 62.4 255.0 Up 07:33:47 - 07:55:08 5616
Kelowna 07:44:24 -60.5 Dark Down 62.0 257.5 Up 07:33:43 - 07:55:04 5539
Peachland 07:44:24 -60.6 Dark Down 62.2 257.4 Up 07:33:44 - 07:55:05 5524
Summerland 07:44:24 -60.8 Dark Down 62.2 257.7 Up 07:33:44 - 07:55:05 5509
Penticton 07:44:23 -60.9 Dark Down 62.2 258.0 Up 07:33:43 - 07:55:04 5503
Oliver 07:44:23 -61.2 Dark Down 62.2 258.6 Up 07:33:42 - 07:55:03 5465
Anarchist Mountain Observatory 07:44:23 -61.4 Dark Down 62.1 259.1 Up 07:33:42 - 07:55:03 5449
Okanogan 07:44:22 -62.0 Dark Down 62.4 260.1 Up 07:33:42 - 07:55:03 5376
Victoria 07:44:35 -61.2 Dark Down 64.8 255.9 Up 07:33:55 - 07:55:16 5354
Brewster 07:44:22 -62.2 Dark Down 62.6 260.4 Up 07:33:42 - 07:55:03 5345
Manson/Chelan 07:44:24 -62.4 Dark Down 62.9 260.5 Up 07:33:43 - 07:55:04 5318
Wenatchee 07:44:23 -62.8 Dark Down 63.0 261.2 Up 07:33:43 - 07:55:04 5264
Ellensburg 07:44:24 -63.2 Dark Down 63.3 261.8 Up 07:33:44 - 07:55:05 5217
Yakima 07:44:23 -63.6 Dark Down 63.3 262.6 Up 07:33:43 - 07:55:04 5172
Toppenish/White Swan 07:44:22 -63.8 Dark Down 63.2 263.2 Up 07:33:42 - 07:55:03 5151
PNWRO 07:44:17 -64.4 Dark Down 62.3 265.2 Up 07:33:36 - 07:54:57 5129
The Dalles 07:44:25 -64.4 Dark Down 63.9 264.1 Up 07:33:44 - 07:55:05 5057
Maupin 07:44:24 -64.8 Dark Down 63.8 265.0 Up 07:33:43 - 07:55:04 5012
Sisters 07:44:24 -65.6 Dark Down 64.2 266.4 Up 07:33:44 - 07:55:05 4911
Bend 07:44:23 -65.9 Dark Down 64.1 267.1 Up 07:33:42 - 07:55:03 4887
Oregon Observatory 07:44:23 -66.0 Dark Down 64.2 267.4 Up 07:33:43 - 07:55:04 4867
Dunrhomin 07:43:21 -69.3 Dark Down 52.0 282.3 Up 07:32:41 - 07:54:02 4776
Nikitin 07:43:22 -69.5 Dark Down 52.0 282.5 Up 07:32:41 - 07:54:02 4756
CU-SBO 07:43:21 -69.6 Dark Down 52.0 282.6 Up 07:32:41 - 07:54:02 4747
Chiloquin 07:44:24 -67.1 Dark Down 64.5 269.8 Up 07:33:44 - 07:55:05 4718
Klamath Falls 07:44:23 -67.5 Dark Down 64.5 270.6 Up 07:33:43 - 07:55:04 4681
Cedarville 07:44:17 -68.5 Dark Down 63.3 273.0 Up 07:33:37 - 07:54:58 4624
Fall River/Burney 07:44:21 -68.7 Dark Down 64.1 273.2 Up 07:33:40 - 07:55:01 4556
Gimple 07:44:18 -69.7 Dark Down 63.7 275.4 Up 07:33:38 - 07:54:59 4463
Greenville 07:44:19 -69.6 Dark Down 63.7 275.3 Up 07:33:38 - 07:54:59 4462
Quincy 07:44:19 -69.8 Dark Down 63.7 275.7 Up 07:33:38 - 07:54:59 4440
Portola 07:44:16 -70.1 Dark Down 63.3 276.2 Up 07:33:36 - 07:54:57 4432
Reno 07:44:14 -70.5 Dark Down 62.8 277.0 Up 07:33:33 - 07:54:54 4411
Carson City 07:44:14 -70.8 Dark Down 62.8 277.7 Up 07:33:33 - 07:54:54 4372
Yerington 07:44:10 -71.2 Dark Down 62.3 278.4 Up 07:33:30 - 07:54:51 4359
Gardnerville 07:44:13 -71.1 Dark Down 62.7 278.2 Up 07:33:32 - 07:54:53 4346
Hawthorne 07:44:08 -71.7 Dark Down 61.8 279.4 Up 07:33:27 - 07:54:48 4316
Lee Vining 07:44:10 -72.2 Dark Down 62.1 280.3 Up 07:33:29 - 07:54:50 4247
Bishop 07:44:06 -72.9 Dark Down 61.4 281.6 Up 07:33:26 - 07:54:47 4192
Beatty 07:43:59 -73.6 Dark Down 60.0 282.9 Up 07:33:18 - 07:54:39 4168
Patrick 07:43:47 -75.4 Dark Down 57.4 286.0 Up 07:33:06 - 07:54:27 4059
Laughlin/Bullhead City 07:43:49 -75.6 Dark Down 57.9 286.2 Up 07:33:09 - 07:54:30 4019
Lake Havasu City 07:43:47 -76.3 Dark Down 57.5 287.3 Up 07:33:07 - 07:54:28 3951
George/Scottsdale 07:43:37 -77.0 Dark Down 55.4 288.9 Up 07:32:57 - 07:54:18 3918
Wildwood 07:44:04 -76.0 Dark Down 60.7 287.3 Up 07:33:24 - 07:54:45 3832
Idyllwild 07:43:56 -76.7 Dark Down 59.2 288.1 Up 07:33:16 - 07:54:37 3824
Calipatria 07:43:52 -77.5 Dark Down 58.0 289.2 Up 07:33:11 - 07:54:32 3779
Yuma 07:43:47 -78.0 Dark Down 57.2 289.9 Up 07:33:07 - 07:54:28 3750

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 04VV130, (2023/01/17 07:47UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 22.45 163
3Iot Aur       04:56:59.6 +33:09:58  2.7  5.28 156
PPM 070048     05:13:17.2 +37:20:12  6.5  0.44 151
PPM 070021     05:11:39.2 +37:48:09  9.5  0.25 151
04VV130        05:11:22.7 +37:33:20 16.9       151
Positions are for J2000

Event circumstances last updated at 2022/12/24 03:39:45 UT

Marc W. Buie, Southwest Research Institute

RECON