"Pseudo-MPEC" for 1964-054A = NORAD 00879 = OGO 1

Created 2018 Apr 18 16:14:33 UT using Find_Orb

Click here for an explanation of pseudo-MPECs

This object will re-enter the earth's atmosphere sometime in the late summer of 2020. Click here for a plot of the inclination and perigee distance vs. time for this object, running from shortly after its launch in 1964 to its re-entry. 1977-093A shows a similar pattern.

Ideally, we'll get more data on this object and I'll be able to provide more precise information about its re-entry. You'll notice that the residuals below are not all that great; like most artsats, this one moves in mysterious ways and is not entirely predictable.

TLEs are available for this object and for some other objects on these pages. Space-Track provided TLEs for it until early 2018. Now that they've dropped it, I'll be providing TLEs (until it re-enters, of course!)

Click here for the current version of this pseudo-MPEC, with further observations and an orbit computed for a more recent epoch.

 
 Astrometry: 
1964-054A    tC2015 10 09.09436 22 10 03.71 -10 54 33.7         x15.0 RqD0522Y00
1964-054A    tC2015 10 09.09529 22 10 00.49 -10 50 41.4         x15.1 RqD0522Y00
1964-054A    tC2015 10 09.09620 22 09 57.14 -10 46 52.7         x15.2 RqD0522Y00
1964-054A    tC2016 09 12.04794 22 13 30.08 +08 21 36.6          14.0 RqD0550Y00
1964-054A    tC2016 09 12.04893 22 13 26.18 +08 24 42.2          14.4 RqD0550Y00
1964-054A    tC2016 09 12.04982 22 13 22.70 +08 27 28.0          14.0 RqD0550Y00
1964-054A    tC2016 09 23.06315 22 13 37.44 +30 12 07.5          14.9 RqD0550Y00
1964-054A    tC2016 09 23.06426 22 13 32.58 +30 15 26.8          14.7 RqD0550Y00
1964-054A    tC2016 09 23.06566 22 13 26.26 +30 19 42.6          14.7 RqD0550Y00
1964-054A    tC2016 09 23.13482 22 08 25.25 +33 42 52.0          14.9 RqD0550Y00
1964-054A    tC2016 09 23.13659 22 08 18.07 +33 47 52.5          15.2 RqD0550Y00
1964-054A    tC2016 09 23.13829 22 08 11.16 +33 52 42.6          15.3 RqD0550Y00
1964-054A    tC2017 08 27.19773 21 57 14.74 +05 34 28.6          15.4 Rq     Y00
1964-054A    tC2017 08 27.19873 21 57 12.00 +05 37 07.4          15.5 Rq     Y00
1964-054A    tC2017 08 27.19976 21 57 09.25 +05 39 51.2          15.3 Rq     Y00
1964-054A     C2017 08 30.19512 22 01 36.20 +20 13 58.9          15.2 Rq     Y00
1964-054A     C2017 08 30.19680 22 01 31.44 +20 17 41.0          15.3 Rq     Y00
1964-054A     C2017 08 30.19843 22 01 26.96 +20 21 14.5          15.2 Rq     Y00
1964-054A    tC2017 09 25.09272 21 54 15.54 -04 21 33.6          13.9 RqD0560Y00
1964-054A    tC2017 09 25.09374 21 54 12.38 -04 18 08.8          14.4 RqD0560Y00
1964-054A    tC2017 09 25.09542 21 54 07.37 -04 12 42.2          14.3 RqD0560Y00
1964-054A    tC2017 09 25.98987 22 16 38.39 +33 52 39.0          15.4 RqD0560Y00
1964-054A    tC2017 09 25.99087 22 16 34.93 +33 55 24.0          15.4 RqD0560Y00
1964-054A    tC2017 09 25.99263 22 16 28.99 +34 00 06.7          15.6 RqD0560Y00
1964-054A     C2017 10 09.02338 22 07 40.35 +25 55 20.5          15.4 RqD0560Y00
1964-054A     C2017 10 09.02444 22 07 36.69 +25 57 45.0          15.5 RqD0560Y00
1964-054A     C2017 10 09.02543 22 07 33.39 +25 59 57.8          15.6 RqD0560Y00
1964-054A     C2017 10 09.22031 22 10 18.88 +31 29 34.2                UD0560703
1964-054A     C2017 10 09.23029 22 09 47.28 +31 53 32.1          15.7 GUD0560703
1964-054A     C2017 10 09.23511 22 09 32.11 +32 05 01.0          15.7 GUD0560703
1964-054A    tC2017 10 18.98211 21 58 17.69 +00 00 56.9          14.7 RqD0560Y00
1964-054A    tC2017 10 18.98344 21 58 13.25 +00 04 53.2          14.7 RqD0560Y00
1964-054A    tC2017 10 18.98475 21 58 08.78 +00 08 48.6          14.7 RqD0560Y00

Station data:
(703) Catalina Sky Survey  (N32.417006 W110.732640)  US/Arizona.  Observer G.
   J. Leonard. Measurers E. J. Christensen, D. C. Fuls, A. R. Gibbs, A. D.
   Grauer, J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. G.
   Matheny, R. L. Seaman, F. C. Shelly. 0.68-m Schmidt + 10K CCD.
(Y00) SONEAR Observatory, Oliveira  (S20.715082 W44.784960)  Brazil.
   Observers C. Jacques, E. Pimentel, J. Barros. Measurer C. Jacques. 0.28-m
   f/2.2 astrograph + CCD.

Orbital elements:  1964-054A = NORAD 00879 = OGO 1
   Perigee 2017 Sep 24.375716 +/- 2.68e-5 TT =  9:01:01 (JD 2458020.875716)
A1: 2.57e-9 +/- 2.76e-10   A2: 1.88e-10 +/- 1.03e-11 AU/day^2
Epoch 2017 Sep 25.0 TT = JDT 2458021.5                        Gray
M  84.93198 +/- 0.0036              (J2000 equator)
n 136.04701215 +/- 2.57e-5          Peri.  200.40401 +/- 0.0011
a 80812.3061 +/- 0.0102             Node   330.24592 +/- 0.00022
e   0.6499478 +/- 7.41e-6           Incl.   85.23536 +/- 0.00031
P3810.38m/2.646d           H 29.5   G  0.15   U  5.7
q 28288.5194 +/- 0.598    Q 133336.092 +/- 0.604
30 of 33 observations 2016 Sept. 12-2017 Oct. 18; mean residual 3".039

Orbital elements near launch:  1964-054A = NORAD 00879 = OGO 1
   Perigee 1964 Sep 5.374989 TT =  8:59:59 (JD 2438643.874989)
A1: 2.57e-9    A2: 1.88e-10  AU/day^2
Epoch 1964 Sep  5.0 TT = JDT 2438643.5                        Gray
M 308.98154                         (J2000 equator)
n 136.05306400     Peri.  316.14355
a 80809.9097km     Node   166.00216
e   0.9131660      Incl.   32.35877
P3810.21m/2.646d   H   29.5     G   0.15   q 7017.04697km  Q 154602.772km
30 of 33 observations 2016 Sept. 12-2017 Oct. 18; mean residual 3".039

For comparison, the nominal elements at launch give a period of 3839 minutes, e=.91795, and i=31.2.

Residuals in arcseconds: 
151009 Y00(3.08+  179+)   160923 Y00 1.63+ 5.53-    170925 Y00 .478+ 1.16+
151009 Y00(5.26+  179+)   170827 Y00 .180+ .172+    170925 Y00 1.18+ 2.31-
151009 Y00(4.17+  179+)   170827 Y00 .125- .671-    171009 Y00 .098+ .338+
160912 Y00 1.17+ 3.03-    170827 Y00 .377+ 1.09-    171009 Y00 .350- .148+
160912 Y00 1.54+ 3.85-    170830 Y00 .375- .135-    171009 Y00 .802+ 1.99-
160912 Y00 2.31+ 5.53-    170830 Y00 .635- .139+    171009 703 3.25- 6.69+
160923 Y00 .783+ 2.36-    170830 Y00 .511+ 1.16-    171009 703 2.12- 7.05+
160923 Y00 1.91+ 5.35-    170925 Y00 1.26- 7.91+    171009 703 2.18- 6.28+
160923 Y00 .913+ 4.41-    170925 Y00 1.58- 7.81+    171018 Y00 1.75- 3.54+
160923 Y00 1.72+ 5.25-    170925 Y00 .150+ 2.34-    171018 Y00 .108- .499+
160923 Y00 2.01+ 6.39-    170925 Y00 1.39+ 1.11-    171018 Y00 .138- .531+

Ephemerides (geocentric):
Date (UTC) HH   RA              Dec         delta  elong  mag " sig PA
---- -- -- --  -------------   -----------  ------ -----  --- ---- ---
2017 10 18 00  07 58 13.344   +79 44 08.12   53097  98.2 15.1 33.1 155
2017 10 18 01  09 04 15.379   +69 08 49.74   46187  90.9 15.0 41.4 170
2017 10 18 02  09 30 55.713   +54 03 42.63   39291  81.1 15.1 53.4 175
2017 10 18 03  09 46 33.375   +32 37 00.98   33021  68.1 15.5 69.7 176
2017 10 18 04  09 58 59.526   +02 49 13.04   28669  54.4 16?? 83.7 176
2017 10 18 05  10 13 33.345   -32 42 46.24   27976  51.1 16?? 78.3 173
2017 10 18 06  10 45 08.518   -64 50 28.85   31313  62.4 15.7 55.0 165
2017 10 18 07  15 40 17.047   -84 43 51.81   37142  75.9 15.3 34.1  89
2017 10 18 08  20 52 07.093   -72 31 48.05   43929  86.6 15.1 21.3   8
2017 10 18 09  21 22 46.969   -60 23 57.73   50875  94.6 15.1 13.9 176
2017 10 18 10  21 33 56.180   -51 01 01.76   57643 100.5 15.2  9.6 167
2017 10 18 11  21 39 58.574   -43 32 20.44   64101 105.1 15.2  7.0 159
2017 10 18 12  21 43 54.382   -37 23 12.84   70206 108.8 15.3  5.4 152
2017 10 18 13  21 46 44.977   -32 11 19.04   75950 111.7 15.4  4.4 144
2017 10 18 14  21 48 57.188   -27 41 54.88   81340 114.1 15.5  3.7 138
2017 10 18 15  21 50 44.709   -23 44 56.98   86391 116.2 15.5  3.2 133
2017 10 18 16  21 52 15.319   -20 13 19.95   91117 117.9 15.6  2.9 129
2017 10 18 17  21 53 33.793   -17 01 55.05   95535 119.4 15.6  2.6 126
2017 10 18 18  21 54 43.247   -14 06 52.29   99659 120.7 15.7  2.4 125
2017 10 18 19  21 55 45.810   -11 25 16.44  103503 121.8 15.7  2.3 125
2017 10 18 20  21 56 43.000   -08 54 51.21  107078 122.7 15.8  2.1 126
2017 10 18 21  21 57 35.931   -06 33 48.70  110396 123.6 15.8  2.0 127
2017 10 18 22  21 58 25.449   -04 20 42.06  113467 124.4 15.9  1.9 130
2017 10 18 23  21 59 12.207   -02 14 20.33  116298 125.0 15.9  1.9 134
2017 10 19 00  21 59 56.727   -00 13 44.72  118899 125.6 15.9  1.8 138
2017 10 19 01  22 00 39.433   +01 41 54.11  121275 126.2 16.0  1.8 143
2017 10 19 02  22 01 20.675   +03 33 18.11  123433 126.6 16.0  1.8 148
2017 10 19 03  22 02 00.751   +05 21 03.33  125379 127.0 16.0  1.9 152
2017 10 19 04  22 02 39.916   +07 05 41.18  127116 127.4 16.0  1.9 157
2017 10 19 05  22 03 18.398   +08 47 39.30  128649 127.7 16.0  2.0 162
2017 10 19 06  22 03 56.400   +10 27 22.36  129981 128.0 16.1  2.1 166
2017 10 19 07  22 04 34.111   +12 05 12.58  131116 128.2 16.1  2.2 170
2017 10 19 08  22 05 11.707   +13 41 30.29  132055 128.4 16.1  2.4 173
2017 10 19 09  22 05 49.359   +15 16 34.29  132802 128.5 16.1  2.5 176
2017 10 19 10  22 06 27.235   +16 50 42.22  133357 128.7 16.1  2.7 179
2017 10 19 11  22 07 05.505   +18 24 10.85  133721 128.7 16.1  2.9   1
2017 10 19 12  22 07 44.342   +19 57 16.35  133896 128.8 16.1  3.1   4
2017 10 19 13  22 08 23.930   +21 30 14.55  133882 128.8 16.1  3.3   5
2017 10 19 14  22 09 04.465   +23 03 21.18  133678 128.8 16.1  3.5   7
2017 10 19 15  22 09 46.162   +24 36 52.09  133285 128.8 16.1  3.8   9
2017 10 19 16  22 10 29.259   +26 11 03.47  132701 128.7 16.1  4.0  10
2017 10 19 17  22 11 14.024   +27 46 12.14  131925 128.6 16.1  4.3  11
2017 10 19 18  22 12 00.767   +29 22 35.79  130956 128.4 16.1  4.6  12
2017 10 19 19  22 12 49.844   +31 00 33.31  129792 128.3 16.1  4.9  13
2017 10 19 20  22 13 41.680   +32 40 25.09  128429 128.0 16.0  5.2  14
2017 10 19 21  22 14 36.780   +34 22 33.50  126865 127.8 16.0  5.6  15
2017 10 19 22  22 15 35.760   +36 07 23.30  125097 127.5 16.0  5.9  15
2017 10 19 23  22 16 39.378   +37 55 22.29  123119 127.1 16.0  6.3  16
2017 10 20 00  22 17 48.584   +39 47 02.03  120928 126.7 15.9  6.8  16
2017 10 20 01  22 19 04.590   +41 42 58.74  118518 126.3 15.9  7.2  17