1978 RK9

1978RK9, 1987 HN2, 1987HN2, 1999 XW122, 1999XW122, 43725, J78R09K, J87H02N, J99XC2W

All data for this body: [vot]

MPC data
Name (number) 1978 RK9 (43725)
a 2.26982
e 0.15909
i / sin(i) 4.8008 / 0.08369
q 1.90870
Q 2.63093
ω 122.0875
Node 347.1897
m 119.3762
n 0.2882
Epoch 2460800.5
nobs 2795
nopp 18
Years observed 1978-2025
rms 0.71
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.270
ep 0.196
sin(ip) 0.084
G 0.150
H 14.690
Mass
D 6.16 0.459
pV 0.060 0.0216
Value
Rotational Period
Period quality None
Spectral Class B
Spectral Class Score 5.088
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.2696 0.1956 0.0841 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.13 0.970 0.970 Masiero 2020PSJ.....1....5M NEATM
6.70 0.560 0.560 Usui 2011PASJ...63.1117U NEATM
7.04 1.410 1.410 Ali-Lagoa 2018A&A...612A..85A NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.056 0.0220 0.0220 Ali-Lagoa 2018A&A...612A..85A NEATM
0.164 0.1130 0.1130 Masiero 2020PSJ.....1....5M 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
14.69 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
B 0.848 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
C Kl None None Movis NIR Popescu 2018A&A...617A..12P PHOT