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Thread: Satellite T16 Discussion

  1. #51
    Senior Member Ken984's Avatar
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    New TLE, not much movement yet.

    Name #44334
    NORAD # 44334
    COSPAR designator 2019-034-B
    Epoch (UTC) 2019-06-24 18:24:17
    Orbit # at Epoch 8
    Inclination 5.986
    RA of A. Node 59.929
    Eccentricity 0.7190314
    Argument of Perigee 180.802
    Revs per day 2.24091486
    Period 10h 42m 35s (642.58 min)
    Semi-major axis 24 667 km
    Perigee x Apogee 553 x 36 025 km
    BStar (drag term) 0.000000000 1/ER
    Mean anomaly 255.292
    Propagation model SDP4
    Element number / age 999 / 0 day(s)
    StdMag (MaxMag) / RCS N/A
    Diameters N/A
    Satellite group N/A


    1#44334
    Lon 106.9979° W
    Lat 4.6162° N
    Alt (km) 16 098.570
    Azm 302.3°
    Elv -30.6°
    RA 06h 50m 18s
    Decl -7° 29' 29"
    Range (km) 25 053.837
    RRt (km/s) -3.275
    Vel (km/s) 4.394
    Direction Descending
    Eclipse No
    MA (phase) 318.1° (225)
    TA 229.3°
    Orbit # 8
    Mag (illum) Not visible
    Constellation Mon
    Last edited by Ken984; 06-24-2019 at 09:45 PM. Reason: duplicate

  2. #52
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    Quote Originally Posted by Doctor j View Post
    Well, Directv is doing "Their Thing" again.

    >24 hours since a TLE update.

    The Arianespace broadcast stated that T16 would be in Geostationary orbit in 5 days with 4 burns.
    Really fast!!

    Today is 4 of launch, Data says orbit still the original GTO orbit.

    So it seems as in the past , Directv considers the movement of satellites "proprietary information" and suppresses TLE updates.

    I predict, when updates come again, T16 will be near Geostationary with NO intermediate data.
    Same data slowdown will occur when T16 moves from testing slot to permanent station!!

    Doctor j
    They can't suppress the TLE' updates.

    The whole idea is to keep track and publish locations of all the stuff floating around up there to prevent collisions
    The data is generated by a significant group of ground and space sensors operated by USSTRATCOM (Space Command).

    They produce the original data sets that feed Celestrak, N2Yo, etc. or you if you want the live feed.

    If you want access you can sign your life away and get it here --- Space-Track.Org

  3. #53
    Super Moderator Doctor j's Avatar
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    Quote Originally Posted by Spear61 View Post
    They can't suppress the TLE' updates.

    The whole idea is to keep track and publish locations of all the stuff floating around up there to prevent collisions
    The data is generated by a significant group of ground and space sensors operated by USSTRATCOM (Space Command).

    They produce the original data sets that feed Celestrak, N2Yo, etc. or you if you want the live feed.

    If you want access you can sign your life away and get it here --- Space-Track.Org
    I know what you say is true, BUT

    I have watched Directv launches since D7s
    I am a member of space-track.org

    It just seems awful suspicious when tracking the TLE's of Directv's satellites vs just about any others.
    Some of the "military" sats are pretty slow

    Doctor j

  4. #54
    We have to go back Kate!! David Ortiz's Avatar
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    Quote Originally Posted by Spear61 View Post
    They can't suppress the TLE' updates.

    The whole idea is to keep track and publish locations of all the stuff floating around up there to prevent collisions
    The data is generated by a significant group of ground and space sensors operated by USSTRATCOM (Space Command).

    They produce the original data sets that feed Celestrak, N2Yo, etc. or you if you want the live feed.

    If you want access you can sign your life away and get it here --- Space-Track.Org
    Welcome to our little group. Great first post!

  5. #55
    Super Moderator Doctor j's Avatar
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    Latest TLE as Orbit #10 begins.
    Still not much movement , against what was reported at end of launch segment "On station after 4 burns in 5 days"


    0 AT&T T-16
    1 44334U 19034B 19176.21830419 -.00000164 00000-0 00000+0 0 9998
    2 44334 5.9184 59.8795 7176635 181.0007 258.7096 2.23543902 98

    AT&T T-16
    Lon 73.3020° W
    Lat 3.7989° N
    Alt (km) 21 063.310
    Azm 273.9°
    Elv -11.3°
    RA 06h 05m 03s
    Decl -6° 41' 14"
    Range (km) 27 966.907
    RRt (km/s) -2.605
    Vel (km/s) 3.594
    Direction Ascending
    Eclipse No
    MA (phase) 301.9° (214)
    TA 218.4°
    Orbit # 10


    Name AT&T T-16
    NORAD # 44334
    COSPAR designator 2019-034-B
    Epoch (UTC) 2019-06-25 05:14:21
    Orbit # at Epoch 9
    Inclination 5.918
    RA of A. Node 59.879
    Eccentricity 0.7176635
    Argument of Perigee 181.001
    Revs per day 2.23543902
    Period 10h 44m 10s (644.17 min)
    Semi-major axis 24 707 km
    Perigee x Apogee 598 x 36 061 km
    BStar (drag term) 0.000000000 1/ER
    Mean anomaly 258.710
    Propagation model SDP4
    Element number / age 999 / 0 day(s)
    StdMag (MaxMag) / RCS N/A
    Diameters N/A
    Satellite group N/A

  6. #56
    Super Moderator Doctor j's Avatar
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    Pix: TLE #1(Green) vs TLE #9 (White)

    AT&T T-16 TLE 1 vs TLE 9.jpg

    Doctor j

  7. #57
    Super Moderator Tom Speer's Avatar
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    Orbital mechanics is not my thing, but N2YO shows T16's ground track doing an S-curve north of Papua New Guinea at 21947 miles. It is obviously not anywhere near a geosynchronous orbit, yet.
    Last edited by Tom Speer; 06-25-2019 at 11:39 PM.
    Tom Speer, N2HF, the curious otter. Part of the DataDigesters team.

  8. #58
    Edgecutter bakers12's Avatar
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    N2YO is showing the NORAD ID for T-16 is 44333.

    EDIT:

    I created a signon at space-track.org and I see that 44333 is T-16. Eutelsat 7C is 44334.

    I fed the latest TLE (from Tuesday afternoon) for 44333 into Orbitron and it looks to me like T-16 is still roughly in a transfer orbit and the "4 burn in 5 days" period hasn't started yet.
    Last edited by bakers12; 06-26-2019 at 05:41 AM.
    Dear God, Please send clothes for all those poor ladies in Daddy's computer. Amen.

  9. #59
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    Quote Originally Posted by bakers12 View Post
    N2YO is showing the NORAD ID for T-16 is 44333.

    EDIT:

    I created a signon at space-track.org and I see that 44333 is T-16. Eutelsat 7C is 44334.

    I fed the latest TLE (from Tuesday afternoon) for 44333 into Orbitron and it looks to me like T-16 is still roughly in a transfer orbit and the "4 burn in 5 days" period hasn't started yet.
    This is not true.
    AT&T 16 is 44334.OH MY

    My bad, NORAD since yesterday has SWAPPED the designations of Eutelsat 7C and AT&T 16!!

    I'll check all the TLE's collected and see what's going on!!

    Quite the twist!!!!

    Doctor j
    Last edited by DataDigesters; 06-26-2019 at 02:20 PM.
    DataDigesters is a team effort of Doctor J and Tom Speer, cooperating to bring you the weekly data,

  10. #60
    Super Moderator Doctor j's Avatar
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    Well despite all the CONFUSION nothing has really changed.
    The TLE designations were changed last night.
    Everything listed before today as Eutelsat 7C is now AT&T T16 and vice versa.
    I Guess NORAD couldn't tell one from the other!!!

    Latest TLE 44333,44334,44335,44336

    0 AT&T T-16
    1 44333U 19034A 19176.38044218 -.00000162 00000-0 00000+0 0 9997
    2 44333 5.9893 59.9309 7168017 180.9778 29.0823 2.23351124 94
    0 EUTELSAT 7C
    1 44334U 19034B 19176.21830419 -.00000164 00000-0 00000+0 0 9998
    2 44334 5.9184 59.8795 7176635 181.0007 258.7096 2.23543902 98
    0 ARIANE 5 R/B
    1 44335U 19034C 19175.10000000 -.00000345 00000-0 00000+0 0 9992
    2 44335 5.6440 62.4640 7269768 177.7450 118.7370 2.30346822 72
    0 ARIANE 5 DEB (SYLDA)
    1 44336U 19034D 19177.37729867 .00002591 00000-0 96670-3 0 9999
    2 44336 5.9767 59.2408 7275267 182.1671 170.4101 2.28493987 125

    Really however they haven't separated much see attached:
    Still right on top of one another.
    Agree may have a hard time reaching GSO for IOT by 6/29 as STA listed!

    AT&T T16 vs EUTELSAT 7C Corrected.jpg

    Doctor j

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