RECON: TNO occultation with 04VV130

Event between 04VV130 and star GA1240:01399317 with event index number of 1549363

Geocentric closest approach at 2020/12/22 04:58:52 UTC

J2000 position of star is 04:54:23.0 +35:42:08
Equinox of date position of star is 04:55:40.6 +35:43:57
Stellar brightness G=13.5, use SENSEUP=32
Star is 75 degrees from the moon. Moon is 52% illuminated.
TNO apparent brightness V=22.6

[RECON map]
TNO is 32.0 AU from the Sun and 31.1 AU from the Earth.
The TNO is moving 24.0 km/sec on the sky relative to the star, or, 3.8 arcsec/hr.
The 1-sigma error in the time of the event is 194 seconds.
The 1-sigma cross-track error in the shadow position is 2656 km.
The sky-plane scale is 22557.3 km/arcsec.

The TNO has an absolute magnitude Hv=7.5
Diameter=189.7 km assuming a 5% albedo -- 7.9 sec chord
Diameter=77.4 km assuming a 30% albedo -- 3.2 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 04VV130, (2020/12/22 04:59UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:07.6 +16:32:59  0.8 19.63  66
3Iot Aur       04:58:21.8 +33:11:50  2.7  2.59  75
PPM 069764     04:57:44.3 +36:12:01  6.0  0.61  75
PPM 069716     04:54:20.2 +35:50:10  8.1  0.31  75
PPM 069717     04:54:21.5 +35:38:22  9.5  0.30  75
PPM 069732     04:55:32.7 +35:49:55 10.2  0.11  75
04VV130        04:55:46.9 +35:44:06 13.5        75
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 4.6 sigma about the mid-time.
The median site spacing is 20.3 km RECON observability=1.0 and success probability=20.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 05:00:01 -46.8 Dark Up 66.0 116.0 Up 04:45:01 - 05:15:01 911
Summerland 05:00:01 -46.7 Dark Up 65.9 115.1 Up 04:45:01 - 05:15:01 891
Penticton 05:00:01 -46.8 Dark Up 66.0 115.1 Up 04:45:01 - 05:15:01 881
Okanagan Falls 05:00:01 -46.9 Dark Up 66.1 114.7 Up 04:45:01 - 05:15:01 864
Oliver 05:00:01 -47.0 Dark Up 66.2 114.3 Up 04:45:01 - 05:15:01 848
Anarchist Mountain Observatory 05:00:01 -47.1 Dark Up 66.4 114.3 Up 04:45:01 - 05:15:01 826
Oroville 05:00:01 -47.1 Dark Up 66.4 114.0 Up 04:45:01 - 05:15:01 821
Tonasket 05:00:01 -47.2 Dark Up 66.5 113.5 Up 04:45:01 - 05:15:01 799
Okanogan 05:00:01 -47.2 Dark Up 66.5 112.6 Up 04:45:01 - 05:15:01 774
Brewster 05:00:01 -47.2 Dark Up 66.5 111.8 Up 04:45:01 - 05:15:01 757
Manson/Chelan 05:00:01 -47.0 Dark Up 66.3 110.8 Up 04:45:01 - 05:15:01 754
Entiat 05:00:01 -47.0 Dark Up 66.4 110.3 Up 04:45:01 - 05:15:01 739
Wenatchee 05:00:01 -47.1 Dark Up 66.4 109.6 Up 04:45:01 - 05:15:01 723
Ellensburg 05:00:01 -47.0 Dark Up 66.4 108.4 Up 04:45:01 - 05:15:01 701
Yakima 05:00:13 -47.2 Dark Up 66.5 107.6 Up 04:45:13 - 05:15:13 614
Toppenish/White Swan 05:00:13 -47.4 Dark Up 66.7 107.3 Up 04:45:13 - 05:15:13 587
Pasco 05:00:01 -48.2 Dark Up 67.5 108.5 Up 04:45:01 - 05:15:01 575
George/Umatilla 05:00:01 -48.1 Dark Up 67.5 107.5 Up 04:45:01 - 05:15:01 560
Goldendale 05:00:15 -47.2 Dark Up 66.6 105.6 Up 04:45:15 - 05:15:15 544
PNWRO 05:00:01 -48.4 Dark Up 67.8 108.3 Up 04:45:01 - 05:15:01 544
The Dalles 05:00:16 -47.0 Dark Up 66.4 104.7 Up 04:45:16 - 05:15:16 532
Maupin 05:00:17 -47.2 Dark Up 66.6 103.9 Up 04:45:17 - 05:15:17 487
Madras/Culver 05:00:18 -47.3 Dark Up 66.7 102.6 Up 04:45:18 - 05:15:18 434
Sisters 05:00:20 -47.1 Dark Up 66.4 101.4 Up 04:45:20 - 05:15:20 414
Redmond 05:00:19 -47.4 Dark Up 66.7 101.7 Up 04:45:19 - 05:15:19 399
Bend 05:00:20 -47.3 Dark Up 66.7 101.1 Up 04:45:20 - 05:15:20 382
Oregon Observatory 05:00:20 -47.3 Dark Up 66.6 100.6 Up 04:45:20 - 05:15:20 369
La Pine/Gilchrist 05:00:21 -47.3 Dark Up 66.6 100.1 Up 04:45:21 - 05:15:21 350
North Lake 05:00:20 -47.8 Dark Up 67.1 99.6 Up 04:45:20 - 05:15:20 288
Chiloquin 05:00:24 -47.3 Dark Up 66.5 97.2 Up 04:45:24 - 05:15:24 249
Paisley 05:00:20 -48.2 Dark Up 67.4 98.7 Up 04:45:20 - 05:15:20 222
Klamath Falls 05:00:25 -47.4 Dark Up 66.6 96.5 Up 04:45:25 - 05:15:25 212
Tulelake 05:00:24 -47.7 Dark Up 66.9 96.1 Up 04:45:24 - 05:15:24 175
Lakeview 05:00:21 -48.5 Dark Up 67.7 97.7 Up 04:45:21 - 05:15:21 165
Cedarville 05:00:21 -48.7 Dark Up 67.9 96.2 Up 04:45:21 - 05:15:21 93
Fall River/Burney 05:00:26 -47.9 Dark Up 67.0 94.1 Up 04:45:26 - 05:15:26 81
Susanville 05:00:25 -48.6 Dark Up 67.6 93.1 Up 04:45:25 - 05:15:25 -6
Greenville 05:00:26 -48.4 Dark Up 67.4 92.3 Up 04:45:26 - 05:15:26 -25
Gimple 05:00:26 -48.5 Dark Up 67.5 92.3 Up 04:45:26 - 05:15:26 -28
Quincy 05:00:26 -48.5 Dark Up 67.4 91.8 Up 04:45:26 - 05:15:26 -46
Portola 05:00:25 -48.8 Dark Up 67.8 91.8 Up 04:45:25 - 05:15:25 -74
Reno 05:00:24 -49.4 Dark Up 68.3 91.6 Up 04:45:24 - 05:15:24 -121
Carson City 05:00:24 -49.4 Dark Up 68.3 90.7 Up 04:45:24 - 05:15:24 -158
Gardnerville 05:00:25 -49.5 Dark Up 68.3 90.1 Up 04:45:25 - 05:15:25 -185
Yerington 05:00:23 -50.0 Dark Up 68.8 90.6 Up 04:45:23 - 05:15:23 -197
Hawthorne 05:00:22 -50.4 Dark Up 69.2 89.7 Up 04:45:22 - 05:15:22 -261
Lee Vining 05:00:24 -50.2 Dark Up 68.8 88.0 Up 04:45:24 - 05:15:24 -305
Tonopah 05:00:18 -51.6 Dark Up 70.3 89.3 Up 04:45:18 - 05:15:18 -351
Bishop 05:00:23 -50.8 Dark Up 69.4 86.8 Up 04:45:23 - 05:15:23 -389
Niwot 04:59:36 -59.8 Dark Up 79.1 109.8 Up 04:44:36 - 05:14:36 -425
SwRI 04:59:36 -59.8 Dark Up 79.1 109.1 Up 04:44:36 - 05:14:36 -434
Lone Pine 05:00:23 -51.2 Dark Up 69.6 84.9 Up 04:45:23 - 05:15:23 -478
Beatty 05:00:18 -52.2 Dark Up 70.6 86.3 Up 04:45:18 - 05:15:18 -485
CPSLO 05:00:34 -49.3 Dark Up 67.4 80.8 Up 04:45:34 - 05:15:34 -530
Indian Springs 05:00:15 -53.1 Dark Up 71.5 85.8 Up 04:45:15 - 05:15:15 -550
Henderson 05:00:14 -53.7 Dark Up 72.0 84.5 Up 04:45:14 - 05:15:14 -626
Searchlight/Boulder City 05:00:15 -53.8 Dark Up 72.0 82.7 Up 04:45:15 - 05:15:15 -688
Wildwood 05:00:29 -51.0 Dark Up 68.8 78.3 Up 04:45:29 - 05:15:29 -722
Laughlin/Bullhead City 05:00:14 -54.1 Dark Up 72.2 81.9 Up 04:45:14 - 05:15:14 -729
Kingman/Dolan Springs 05:00:12 -54.6 Dark Up 72.6 82.1 Up 04:45:12 - 05:15:12 -742
Mohave Valley 05:00:14 -54.2 Dark Up 72.2 81.1 Up 04:45:14 - 05:15:14 -758
Patrick 05:00:01 -54.6 Dark Up 72.8 82.8 Up 04:45:01 - 05:15:01 -760
DCO 05:00:01 -55.3 Dark Up 73.3 82.0 Up 04:45:01 - 05:15:01 -797
Lake Havasu City 05:00:14 -54.4 Dark Up 72.3 79.9 Up 04:45:14 - 05:15:14 -808
Idyllwild 05:00:23 -52.6 Dark Up 70.2 77.5 Up 04:45:23 - 05:15:23 -818
Parker 05:00:14 -54.5 Dark Up 72.3 78.8 Up 04:45:14 - 05:15:14 -846
Blythe 05:00:16 -54.3 Dark Up 71.9 77.2 Up 04:45:16 - 05:15:16 -892
Calipatria 05:00:20 -53.6 Dark Up 71.0 75.8 Up 04:45:20 - 05:15:20 -917
Yuma 05:00:18 -54.4 Dark Up 71.7 74.5 Up 04:45:18 - 05:15:18 -989

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, (2020/12/22 04:59UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 19.63  66
3Iot Aur       04:56:59.6 +33:09:58  2.7  2.59  75
PPM 069764     04:56:20.0 +36:10:07  6.0  0.61  75
PPM 069716     04:52:56.3 +35:48:10  8.1  0.31  75
PPM 069717     04:52:57.7 +35:36:22  9.5  0.30  75
PPM 069732     04:54:08.8 +35:47:57 10.2  0.11  75
04VV130        04:54:23.0 +35:42:08 13.5        75
Positions are for J2000

Event circumstances last updated at 2019/06/01 22:13:57 UT

Marc W. Buie, Southwest Research Institute

RECON