Ericfein

1977 FD1, 1977FD1, 1990 WL5, 1990WL5, 1999 CB81, 1999CB81, 28309, J77F01D, J90W05L, J99C81B

All data for this body: [vot]

MPC data

Name (number)	Ericfein (28309)
a	2.38840
e	0.14033
i / sin(i)	4.7808 / 0.08334
q	2.05323
Q	2.72357
ω	294.7970
Node	201.2433
m	50.3992
n	0.2670
Epoch	2460800.5

n_obs	3117
n_opp	23
Years observed	1977-2025
rms	0.71

Best values

	Value	Standard error
Parent

a_p	2.389
e_p	0.175
sin(i_p)	0.093
G	0.150
H	14.440
Mass
D	8.30	0.025
pV	0.036	0.0073

	Value
Rotational Period
Period quality	None
Spectral Class	B
Spectral Class Score	2.952

Proper elements data

a_p	e_p	sin(i_p)	Author	Reference	Method
2.3887	0.1746	0.0932	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Nov-2024

Diameter data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
8.08	2.270	2.270	Masiero	2021PSJ.....2..162M	NEATM
8.16	2.170	2.170	Masiero	2020PSJ.....1....5M	NEATM
8.29	0.025	0.025	Masiero	2011ApJ...741...68M	NEATM
8.37	2.855	2.855	Masiero	2017AJ....154..168M	NEATM
8.78	2.790	2.790	Masiero	2020PSJ.....1....5M	NEATM
8.92	2.910	2.910	Masiero	2020PSJ.....1....5M	NEATM

Albedo data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.032	0.0083	0.0083	Masiero	2011ApJ...741...68M	NEATM
0.040	0.0300	0.0300	Masiero	2020PSJ.....1....5M	NEATM
0.044	0.0370	0.0370	Masiero	2020PSJ.....1....5M	NEATM
0.051	0.0360	0.0360	Masiero	2020PSJ.....1....5M	NEATM
0.052	0.0220	0.0370	Masiero	2021PSJ.....2..162M	NEATM
0.065	0.0383	0.0383	Masiero	2017AJ....154..168M	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
14.44			MPC-2023-12-04	MPC-2023-12-04	Phot

Spectral Class Data

Class 1	Class 2	Probability of Class 1	Probability of Class 2	Taxonomy	Wavelength	Author	Reference	Method
B		0.492		Bus-Demeo	VIS	Sergeyev	2022A&A...658A.109S	PHOT
C	C			DeMeo-Carry	VIS	Choi	2023PSJ.....4...49C	PHOT
X	X	0.3379	0.3379	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT