Hirayama

01999, 1935GF, 1940EH, 1951EY1, 1951FA, 1965UF, 1969NB, 1973DR, 1975NE, J35G00F, J40E00H, J51E01Y, J51F00A, J65U00F, J69N00B, J73D00R, J75N00E

All data for this body: [vot]

MPC data
Name (number) Hirayama (1999)
Packed designation 01999
a 3.11333
e 0.11776
i / sin(i) 12.5361 / 0.21705
q 2.74669
Q 3.47997
ω 356.1716
Node 147.8637
m 327.4028
n 0.1794
Epoch 2459600.5
nobs 3670
nopp 35
Years observed 1940-2022
rms 0.51
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.116
ep 0.146
sin(ip) 0.200
Value Standard error
G 0.150
H 11.040
Mass
D 36.41 0.292
pV 0.086 0.0025
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1160 0.1459 0.1998 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Jan-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
29.10 0.899 0.899 Ryan&Woodward 2010AJ....140..933R IRAS-STM
30.08 7.970 7.970 Nugent 2016AJ....152...63N NEATM
31.46 8.707 8.707 Masiero 2017AJ....154..168M NEATM
32.54 8.730 8.730 Masiero 2020PSJ.....1....5M NEATM
33.16 3.320 3.320 Ali-Lagoa 2018A&A...612A..85A NEATM
33.95 2.100 2.100 Tedesco 2002AJ....123.1056T STM
35.68 0.550 0.550 Usui 2011PASJ...63.1117U NEATM
37.21 3.720 3.720 Ali-Lagoa 2018A&A...612A..85A NEATM
37.58 7.520 7.520 Ali-Lagoa 2018A&A...612A..85A NEATM
38.05 1.443 1.443 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
38.28 0.400 0.400 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.053 0.0050 0.0050 Masiero 2012ApJ...759L...8M NEATM
0.059 0.0240 0.0240 Ali-Lagoa 2018A&A...612A..85A NEATM
0.060 0.0120 0.0120 Ali-Lagoa 2018A&A...612A..85A NEATM
0.069 0.0850 0.0850 Masiero 2020PSJ.....1....5M NEATM
0.070 0.0054 0.0054 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.075 0.0150 0.0150 Ali-Lagoa 2018A&A...612A..85A NEATM
0.077 0.0530 0.0530 Masiero 2017AJ....154..168M NEATM
0.080 0.1000 0.1000 Nugent 2016AJ....152...63N NEATM
0.088 0.0120 0.0120 Tedesco 2002AJ....123.1056T STM
0.120 0.0040 0.0040 Ryan&Woodward 2010AJ....140..933R IRAS-STM
G data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.15 MPC-2022-01-18 MPC-2022-01-18 Phot
H data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
11.04 MPC-2022-01-18 MPC-2022-01-18 Phot