Hello all,

I noted that the angular elements of NEA 2009 MC9 orbit are similar to those of
lost comet D/1884 O1 (Barnard).

D/1884 O1 (according to Kinoshita; Epoch 2009-11-25):
http://jcometobs.web.fc2.com/pcmt/i84o1.htm

q 1.2709837
e 0.5837969
Peri 338.60435
Node 334.52058
Incl 9.07027

2009 MC9:

q 1.15816
e 0.50366
Peri 350.920
Node 321.958
Incl 9.764

Orbit comparing parameters:

Tisserand's criterion according to Jupiter:

TJ (D/1884 O1) = 2.97
TJ (2009 MC9) = 2.82

Ecliptic longitude of perihelion:

L (D/1884 O1) = 313.4
L (2009 MC9) = 311.0

Ecliptic latitude of perihelion:

D (D/1884 O1) = -3.3
D (2009 MC9) = -2.2

Observed arc of 2009 MC9 is only 2 days.

I tried to link these orbits with no success. However, I have almost no skill in
orbit linking. Maybe some of comets-ml readers could try to link these orbits.

Pseudo-astrometry of D/1884 O1 generated from JPL ephemeris:
http://astro.21ball.ru/etc/I84O010.txt

Astrometry of 2009 MC9:
http://www.cfa.harvard.edu/mpec/K09/K09N03.html

Best regards,
Dimitry Chestnov