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NEOCP object 973B138   Message List  
Reply | Forward Message #22072 of 22561 |
Re: {MPML} NEOCP object 973B138

> if you plan to go for 973B138 on the NEOCP, please wait until you see
> its status as "updated".

With KNOBS at the ready, that's unnecessary.

973B138 C2009 07 05.48744700 36 41.550+23 53 46.99 18.8 R 568
973B138 C2009 07 05.48816700 36 41.616+23 53 47.90 18.8 R 568
973B138 C2009 07 05.48884400 36 41.682+23 53 48.79 18.7 R 568

> We found this object two nights ago but didn't submit it because
> we were not sure if it is real. Last night we confirmed it on a second
> night, but both nights do not match perfectly.

We see what you mean.

973B138
Epoch 2009 Jun 18.0 TT = JDT 2455000.5 Tholen
M 356.36945 (2000.0) P Q
n 0.15802218 Peri. 64.29333 +0.93384019 +0.18438388
a 3.3883689 Node 283.82348 -0.31215325 +0.83849666
e 0.4393682 Incl. 18.39987 +0.17465063 +0.51276304
P 6.24 H 15.4 G 0.15
Residuals in seconds of arc
090704 J75 (1.62- 1.17+) 090705 J75 0.23- 0.15- 090705 568 0.02- 0.01-
090704 J75 0.03+ 0.02- 090705 J75 0.14+ 0.25+ 090705 568 0.00 0.01+
090704 J75 (1.48+ 1.22+) 090705 568 0.02+ 0.00

I was guessing that it might be a Phocaea, but there isn't a local minimum
into which that type of orbit can settle, so it migrated to more of a
Griqua-type orbit. But there are still all sorts of possibilities,
including NEO orbits. There is a local minimum near a Hungaria-type orbit:

973B138
Epoch 2009 Jun 18.0 TT = JDT 2455000.5 Tholen
M 1.58374 (2000.0) P Q
n 0.34056277 Peri. 55.14293 +0.84354489 +0.44945294
a 2.0308192 Node 276.50558 -0.53609189 +0.73750373
e 0.1457744 Incl. 17.21061 +0.03221030 +0.50406379
P 2.89 H 15.7 G 0.15
Residuals in seconds of arc
090704 J75 (1.62- 1.15+) 090705 J75 0.31- 0.09- 090705 568 0.02- 0.01-
090704 J75 0.06+ 0.05- 090705 J75 0.11+ 0.30+ 090705 568 0.00 0.01+
090704 J75 (1.53+ 1.18+) 090705 568 0.02+ 0.00



Sun Jul 5, 2009 1:05 pm

tholen@...
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Message #22072 of 22561 |
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Folks, if you plan to go for 973B138 on the NEOCP, please wait until you see its status as "updated". We found this object two nights ago but didn't submit it...
Reiner M. Stoss
rms1kpde
Offline Send Email
Jul 5, 2009
6:52 am

Hi Reiner, I'm staying at the telescope under cloudy skies, till I can get a chance of confirming 9N6E600 (which has been removed from the NEOCP). Been cloudy...
Robert McNaught
rmn@...
Send Email
Jul 5, 2009
7:00 am

... The NEOCP was updated meanwhile and it looks rather Hungaria-like now. It seems not enough to find them all over the opposition region, now we even pick...
Reiner M. Stoss
rms1kpde
Offline Send Email
Jul 5, 2009
12:52 pm

... With KNOBS at the ready, that's unnecessary. 973B138 C2009 07 05.48744700 36 41.550+23 53 46.99 18.8 R 568 973B138 C2009 07 05.48816700 36...
Dave Tholen
tholen@...
Send Email
Jul 5, 2009
1:12 pm

Thought we'd see what some parallax information would do for the orbit solution. Looks like we can now rule out NEO solutions. Both Hungaria and Phocaea...
Dave Tholen
tholen@...
Send Email
Jul 5, 2009
3:50 pm

Dave, ... We have recovered it tonight incidentally. It was not detected anymore after your July 5 observations. Despite the short arc of just one and a half...
Reiner M. Stoss
rms1kpde
Offline Send Email
Aug 31, 2009
5:03 am

Hi all, I have made of the calculations in 2 versions: 1) Considering all the observations: Perihelion 2009 Jul 19.880683 TT = 21:08:11 (JD 2455032.380683) ...
Roberto
rasalgehu
Offline Send Email
Jul 5, 2009
4:12 pm
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