Mikeshepard

1977 FQ, 1977FQ, 1998 MA8, 1998MA8, 20392, J77F00Q, J98M08A

All data for this body: [vot]

MPC data

Name (number)	Mikeshepard (20392)
a	2.89738
e	0.09688
i / sin(i)	15.9191 / 0.27428
q	2.61667
Q	3.17809
ω	54.3501
Node	252.7985
m	162.5170
n	0.1998
Epoch	2460800.5

n_obs	2948
n_opp	23
Years observed	1977-2025
rms	0.71

Best values

	Value	Standard error
Parent	Fringilla (709)

a_p	2.896
e_p	0.082
sin(i_p)	0.290
G	0.150
H	13.400
Mass
D	11.87	0.094
pV	0.038	0.0113

	Value
Rotational Period	29.000
Period quality	2
Spectral Class	X
Spectral Class Score	4.280

Family data

Parent	Parent name	Family ID	Family name	C_j	Author	Reference	Method
709	Fringilla	623	Fringilla		Nesvorny	doi.org/10.26033/6cg5-pt13	HCM-2020-08-14

Proper elements data

a_p	e_p	sin(i_p)	Author	Reference	Method
2.8959	0.0819	0.2905	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Nov-2024

Diameter data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
11.86	0.094	0.094	Masiero	2011ApJ...741...68M	NEATM
13.50	3.760	3.760	Masiero	2020PSJ.....1....5M	NEATM
15.99	5.260	5.260	Masiero	2020PSJ.....1....5M	NEATM
20.05	7.130	7.130	Masiero	2012ApJ...759L...8M	NEATM

Albedo data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.023	0.0150	0.0150	Masiero	2012ApJ...759L...8M	NEATM
0.033	0.0430	0.0430	Masiero	2020PSJ.....1....5M	NEATM
0.054	0.0430	0.0430	Masiero	2020PSJ.....1....5M	NEATM
0.066	0.0210	0.0210	Masiero	2011ApJ...741...68M	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
13.40			MPC-2023-12-04	MPC-2023-12-04	Phot

Periods

Value	Quality	Side real or Synodic	Author	Reference	Method
29.2	2	Synodic	Warner	2015MPBu...42..108W	Lightcurve

Spectral Class Data

Class 1	Class 2	Probability of Class 1	Probability of Class 2	Taxonomy	Wavelength	Author	Reference	Method
X	X	0.7134	0.3990	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT