1991 PP9

1991PP9, 1987 SU14, 1987SU14, 1987 UK6, 1987UK6, 1998 DP35, 1998DP35, 27754, J87S14U, J87U06K, J91P09P, J98D35P

All data for this body: [vot]

MPC data

Name (number)	1991 PP9 (27754)
a	2.77833
e	0.21507
i / sin(i)	6.8177 / 0.11871
q	2.18080
Q	3.37586
ω	103.6088
Node	327.8717
m	238.5870
n	0.2128
Epoch	2460200.5

n_obs	2396
n_opp	19
Years observed	1987-2022
rms	0.59

Best values

	Value	Standard error
Parent	Dora (668)

a_p	2.781
e_p	0.196
sin(i_p)	0.137

	Value	Standard error
G	0.150
H	13.890
Mass
D	11.59	0.297
pV	0.051	0.0066

Family data

Parent	Parent name	Family ID	Family name	C_j	Author	Reference	Method
668	Dora	512	Dora		Nesvorny	doi.org/10.26033/6cg5-pt13	HCM-2020-08-14

Proper elements data

a_p	e_p	sin(i_p)	Author	Reference	Method
2.7809	0.1964	0.1370	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Oct-2022

Diameter data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
10.75	1.080	1.080	Ali-Lagoa	2018A&A...612A..85A	NEATM
10.94	3.270	3.270	Masiero	2021PSJ.....2..162M	NEATM
11.45	3.300	3.300	Masiero	2021PSJ.....2..162M	NEATM
11.72	0.330	0.330	Usui	2011PASJ...63.1117U	NEATM
11.83	1.180	1.180	Ali-Lagoa	2018A&A...612A..85A	NEATM
12.31	3.806	3.806	Masiero	2017AJ....154..168M	NEATM
12.71	3.120	3.120	Masiero	2012ApJ...759L...8M	NEATM
8.29	2.160	2.160	Nugent	2016AJ....152...63N	NEATM

Albedo data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.038	0.0390	0.0390	Masiero	2012ApJ...759L...8M	NEATM
0.042	0.0224	0.0224	Masiero	2017AJ....154..168M	NEATM
0.042	0.0170	0.0280	Masiero	2021PSJ.....2..162M	NEATM
0.049	0.0100	0.0100	Ali-Lagoa	2018A&A...612A..85A	NEATM
0.049	0.0220	0.0390	Masiero	2021PSJ.....2..162M	NEATM
0.059	0.0120	0.0120	Ali-Lagoa	2018A&A...612A..85A	NEATM
0.070	0.0400	0.0400	Nugent	2016AJ....152...63N	NEATM

G data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.15			MPC-2023-12-94	MPC-2023-12-94	Phot

H data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
13.89			MPC-2023-12-04	MPC-2023-12-04	Phot