[Neocp_artsats] Three unidentified artsats

Bill Gray pluto at projectpluto.com
Fri Feb 12 20:44:58 EST 2021


    Messed up here,  and three bits of junk have been on NEOCP
for a day or two.  I can't ID any of them.  A10v8km has an orbit
vaguely resembling that of 2007-003AS,  which is itself a fragment
from an exploded booster.  I think A10v8km is yet another fragment
from that booster.  For ZTF0KWn and ZTF0KWt,  I don't even have
guesses for identifications.  (But for all three,  we have orbits
that are unambiguously artsats.)

-- Bill

Orbital elements:  A10v8km
    Perigee 2021 Feb 12.72669 +/- 5.21e-5 TT = 17:26:25 (JD 2459258.22669)
Epoch 2021 Feb 13.0 TT = JDT 2459258.5                        Gray
M 167.23113395 +/- 0.032            (J2000 equator)
n 611.86516088 +/- 0.00299          Peri.  145.38718 +/- 0.006
a 29659.6728 +/- 0.0967             Node   176.11763 +/- 0.0011
e   0.7679158 +/- 1.02e-5           Incl.   25.40415 +/- 0.0012
P 847.23m/0.588d           H 31.3   G  0.15   U  8.8
q 6883.54030 +/- 0.298    Q 52435.8053 +/- 0.371
 From 21 observations 2021 Feb. 12 (14.0 hr); mean residual 0".901

Orbital elements:  ZTF0KWn
    Perigee 2021 Feb 10.70061 +/- 0.00741 TT = 16:48:52 (JD 2459256.20061)
Epoch 2021 Feb 11.0 TT = JDT 2459256.5                        Gray
M  99.47711910 +/- 1.6              (J2000 equator)
n 332.26071997 +/- 2.84             Peri.  328.08424 +/- 0.22
a 44560.5803 +/- 254                Node   349.83866 +/- 0.032
e   0.6787970 +/- 0.00258           Incl.   33.57194 +/- 0.033
P1560.19m/1.083d           H 33.4   G  0.15   U 13.4
q 14312.9915 +/- 194    Q 74808.1691 +/- 320
 From 8 observations 2021 Feb. 11 (91.9 min); mean residual 1".090

Orbital elements:  ZTF0KWt
    Perigee 2021 Feb 10.93543 +/- 0.00588 TT = 22:27:00 (JD 2459256.43543)
Epoch 2021 Feb 11.0 TT = JDT 2459256.5                        Gray
M  20.31661903 +/- 1.6              (J2000 equator)
n 314.62268189 +/- 5.55             Peri.  289.54328 +/- 0.55
a 46210.7999 +/- 544                Node    62.30773 +/- 0.042
e   0.7112216 +/- 0.00463           Incl.   14.65446 +/- 0.029
P1647.66m/1.144d           H 33.7   G  0.15   U 13.9
q 13344.6805 +/- 359    Q 79076.9194 +/- 751
 From 8 observations 2021 Feb. 11 (52.1 min); mean residual 0".665



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