Hammergren

07917, 1981 EG5, 1981EG5, 1986 RT3, 1986RT3, 1986 RZ13, 1986RZ13, 1992 DG8, 1992DG8, J81E05G, J86R03T, J86R13Z, J92D08G

All data for this body: [vot]

MPC data
Name (number) Hammergren (7917)
a 2.41326
e 0.12889
i / sin(i) 8.6873 / 0.15104
q 2.10221
Q 2.72431
ω 13.0712
Node 320.7602
m 131.8312
n 0.2629
Epoch 2460800.5
nobs 2381
nopp 23
Years observed 1981-2025
rms 0.74
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.413
ep 0.092
sin(ip) 0.158
G 0.150
H 14.510
Mass
D 3.26 0.244
pV 0.292 0.0434
Value
Rotational Period
Period quality None
Spectral Class D
Spectral Class Score 1.225
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.4127 0.0919 0.1577 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.18 0.251 0.251 Masiero 2011ApJ...741...68M NEATM
4.57 1.043 1.043 Masiero 2017AJ....154..168M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.147 0.0664 0.0664 Masiero 2017AJ....154..168M NEATM
0.399 0.0573 0.0573 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
14.51 MPC-2023-12-04 MPC-2023-12-04 Phot
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
D D 0.2042 0.2042 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT