DirecTV-10 Orbital History - Currently back at original location
Code:
DirecTV-10 513
1 31862U 07032A 10178.43808065 -.00000107 00000-0 10000-3 0 5138
2 31862 000.0408 142.2858 0000022 128.8521 059.1703 01.00271423 10900
Name DirecTV-10
NORAD # 31862
Epoch (UTC) 06-27-2010 10:30:50
Orbit # at Epoch 1090
Inclination 0.041
RA of A. Node 142.286
Eccentricity 0.0000022
Argument of Perigee 128.852
Revs per day 1.00271423
Period 23h 56m 06s (1436.10 min)
Semi-major axis 42 165 km
Perigee x Apogee 35 787 x 35 787 km
Element number / age 513 / 0 day(s)
Lon 102.8167° W
Lat 0.0177° S
Alt (km) 35 786.150
# DateGMT PerigeeApogee Gap Longitude Latitude Inclin
513 06-27 10:30 35,787 x 35,787 0 102.8167°W 0.0177°S 0.041°
512 06-26 17:12 35,784 x 35,790 6 102.8200°W 0.0114°S 0.042°
511 06-25 10:09 35,780 x 35,794 14 102.8213°W 0.0138°S 0.038°
510 06-24 08:03 35,786 x 35,788 2 102.8261°W 0.0020°N 0.029°
509 06-21 05:48 35,778 x 35,804 26 102.9193°W 0.0053°N 0.046°
508 06-18 11:20 35,778 x 35,805 27 102.7485°W 0.0290°S 0.039°
507 06-16 05:41 35,785 x 35,790 4 102.6214°W 0.0103°N 0.033°
506 06-15 09:09 35,787 x 35,789 2 102.6071°W 0.0097°N 0.052°
505 06-14 07:50 35,785 x 35,788 3 102.5920°W 0.0121°N 0.053°
504 06-13 16:43 35,784 x 35,789 5 102.5954°W 0.0266°S 0.052°
503 06-10 08:50 35,786 x 35,787 1 102.5921°W 0.0138°N 0.040°
502 06-07 07:57 35,785 x 35,788 3 102.5845°W 0.0205°N 0.040°
501 06-06 04:52 35,785 x 35,788 3 102.5788°W 0.0144°N 0.040°
500 06-05 03:37 35,785 x 35,788 3 102.5753°W 0.0084°N 0.039°
499 06-03 09:59 35,784 x 35,788 4 102.5792°W 0.0193°N 0.039°
498 06-01 20:56 35,786 x 35,789 3 102.5926°W 0.0001°S 0.032°
497 05-31 03:03 35,784 x 35,790 6 102.5919°W 0.0088°S 0.008°
496 05-29 12:37 35,785 x 35,790 5 102.5901°W 0.0061°N 0.009°
495 05-28 09:46 35,785 x 35,790 5 102.5900°W 0.0016°S 0.010°
494 05-27 07:26 35,785 x 35,789 4 102.5832°W 0.0099°S 0.012°
493 05-24 09:14 35,783 x 35,787 4 102.5697°W 0.0002°S 0.025°
492 05-18 08:29 35,785 x 35,787 2 102.7430°W 0.0121°N 0.042°
491 05-14 16:13 35,786 x 35,787 1 102.8013°W 0.0214°S 0.048°
490 05-13 13:13 35,786 x 35,787 1 102.8021°W 0.0185°S 0.045°
489 05-13 03:47 35,786 x 35,787 1 102.8089°W 0.0208°N 0.047°
489 05-11 13:21 35,786 x 35,787 1 102.8031°W 0.0175°S 0.043°
488 05-11 04:25 35,786 x 35,787 1 102.8068°W 0.0175°N 0.042°
487 05-10 18:43 35,785 x 35,788 3 102.8095°W 0.0148°S 0.047°
486 05-09 14:33 35,786 x 35,788 2 102.8052°W 0.0213°S 0.044°
485 05-08 02:44 35,786 x 35,788 2 102.8055°W 0.0202°N 0.041°
D10/D12 News (5/7/2010):
"DirecTV 10 is currently operating at the 102.815° orbital location. As DirecTV has previously informed the Commission, that satellite suffered a post launch anomaly that has limited the capacity available in certain local markets. DirecTV believes that it can ameliorate this condition, but will need to discontinue commercial service from the satellite and relocate it slightly so that it is not within the cluster of it's other operational satellites. Accordingly, DirecTV intends to move DirecTV 10 to the 102.6° position to conduct the restorative procedure. During this migration, DirecTV 10 will continue to provide service to subscribers. However, over the course of this migration, DirecTV intends to transfer all traffic from DirecTV 10 to DirecTV 12, DirecTV's newest satellite which has just completed in-orbit testing and is expected to arrive at the nominal 103° location on or about May 11, 2010. At the conclusion of the STA period, the satellite will be in a position for the corrective procedure to be attempted."
D10 FCC Application - For Testing after the Corrective Action (5/25/2010):
"DIRECTV Enterprises, LLC requests Special Temporary Authority for 30 days to repeat an abbreviated set of in-orbit tests on the DIRECTV 10 satellite at the 102.6 WL location"
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"DirecTV 10 is currently operating at the 102.815° orbital location. As DirecTV has previously informed the Commission, that satellite suffered a post launch anomaly that has limited the capacity available in certain local markets. DirecTV believes that it can ameliorate this condition, but will need to discontinue commercial service from the satellite and relocate it slightly so that it is not within the cluster of it's other operational satellites. Accordingly, DirecTV intends to move DirecTV 10 to the 102.6° position to conduct the restorative procedure. During this migration, DirecTV 10 will continue to provide service to subscribers. However, over the course of this migration, DirecTV intends to transfer all traffic from DirecTV 10 to DirecTV 12, DirecTV's newest satellite which has just completed in-orbit testing and is expected to arive at the nominal 103° location on or about May 11, 2010. At the conclusion of the STA period, the satellite will be in a position for the corrective procedure to be attempted."
In the short term, it should be noted that as Sixto stated elsewhere, D12 has 2 more CONUS transponders than D10...so off loading D10's national HD's will still leave space on D12 for about 10 national HD channels to be launched prior to D10 moving back and lighting back up for service.
I wouldn't be surprised if they had a fix ready for a long time and that they were waiting for D12 to light up and take its off it's load. But anyways this is great news.
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Ironically we will all be again waiting for another drift to start with D10 before major new HD can come online. Get the D10 drift thread ready!
The drift is going to be a few tenths of a degree - around a 100 miles. There won't be much time to watch.
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maybe this thread could be a little less chaotic than the DIRECTV12 thread?
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Whatever the issue is, they feel like they now know how to fix it.
Speculation: and they may have even tested it on D12 during the past few months.
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So if all goes exactly as planned with D10 and D12, what is the potential capacity for dtv?
D12 adds the capacity for 10 additional hd channels over D10, which ups the potential national hd channels to 210 or so. Fixing the spot beams on D10 could add more local hd channels, although I don't think anyone knows just how many since the number of problematic transponders was never revealed, IIRC.
Come to think of it, they knew about D12's extra transponders, so nix my comments about additional national hd channels!
could this be the reason for extended testing of D12
There will be people debating both sides, but it's quite possible.
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D12 adds the capacity for 10 additional hd channels over D10, which ups the potential national hd channels to 210 or so. Fixing the spot beams on D10 could add more local hd channels, although I don't think anyone knows just how many since the number of problematic transponders was never revealed, IIRC.
Come to think of it, they knew about D12's extra transponders, so nix my comments about additional national hd channels!
BUT...off loading D10's HD's to D12 will not consume all of D12's national HD bandwidth. There still should be 10 channels available prior to D10 coming back online.
