Hirasawa

04799, 1977 QM4, 1977QM4, 1985 TT2, 1985TT2, 1989 TC1, 1989TC1, J77Q04M, J85T02T, J89T01C

All data for this body: [vot]

MPC data
Name (number) Hirasawa (4799)
a 2.47198
e 0.12766
i / sin(i) 0.6170 / 0.01077
q 2.15642
Q 2.78754
ω 82.7339
Node 241.4573
m 101.3982
n 0.2536
Epoch 2460800.5
nobs 4242
nopp 28
Years observed 1977-2025
rms 0.71
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.469
ep 0.104
sin(ip) 0.028
G 0.150
H 13.910
Mass
D 7.87 0.071
pV 0.056 0.0087
Value
Rotational Period 24.000
Period quality 1
Spectral Class S
Spectral Class Score 1.000
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.4694 0.1043 0.0275 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
10.51 2.890 2.890 Masiero 2021PSJ.....2..162M NEATM
10.67 2.450 2.450 Nugent 2016AJ....152...63N NEATM
11.26 4.220 4.220 Masiero 2020PSJ.....1....5M NEATM
11.35 3.609 3.609 Masiero 2017AJ....154..168M NEATM
14.43 5.080 5.080 Masiero 2012ApJ...759L...8M NEATM
7.86 0.071 0.071 Masiero 2011ApJ...741...68M NEATM
8.72 2.500 2.500 Masiero 2021PSJ.....2..162M NEATM
8.74 2.280 2.280 Masiero 2021PSJ.....2..162M NEATM
8.74 2.085 2.085 Masiero 2017AJ....154..168M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.030 0.0200 0.0200 Nugent 2016AJ....152...63N NEATM
0.031 0.0420 0.0420 Masiero 2012ApJ...759L...8M NEATM
0.040 0.0150 0.0250 Masiero 2021PSJ.....2..162M NEATM
0.041 0.0224 0.0224 Masiero 2017AJ....154..168M NEATM
0.042 0.0370 0.0370 Masiero 2020PSJ.....1....5M NEATM
0.067 0.0438 0.0438 Masiero 2017AJ....154..168M NEATM
0.068 0.0270 0.0440 Masiero 2021PSJ.....2..162M NEATM
0.070 0.0260 0.0410 Masiero 2021PSJ.....2..162M NEATM
0.104 0.0188 0.0188 Masiero 2011ApJ...741...68M NEATM
G data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.15 MPC-2023-12-94 MPC-2023-12-94 Phot
H data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
13.91 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
24.0 1 Synodic Behrend LCDB Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S Kl None None Movis NIR Popescu 2018A&A...617A..12P PHOT