1985 RJ4

1985RJ4, 15225, 1974 SD1, 1974SD1, J74S01D, J85R04J

All data for this body: [vot]

MPC data
Name (number) 1985 RJ4 (15225)
a 3.12728
e 0.20445
i / sin(i) 2.2458 / 0.03919
q 2.48790
Q 3.76666
ω 315.2317
Node 33.4394
m 70.8884
n 0.1782
Epoch 2460800.5
nobs 2461
nopp 26
Years observed 1974-2025
rms 0.76
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.117
ep 0.179
sin(ip) 0.035
G 0.150
H 13.790
Mass
D 10.36 0.369
pV 0.086 0.0044
Value
Rotational Period
Period quality None
Spectral Class C
Spectral Class Score 10.477
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1171 0.1795 0.0346 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
10.38 0.372 0.372 Masiero 2011ApJ...741...68M NEATM
8.83 2.990 2.990 Masiero 2020PSJ.....1....5M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.075 0.0590 0.0590 Masiero 2020PSJ.....1....5M NEATM
0.086 0.0044 0.0044 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
13.79 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
C C 0.0626 0.4410 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
B 0.484 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
C DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
C 0.62 Bus VIS Carvano 2010A&A...510A..43C PHOT
C C 0.0895 0.4410 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C C 0.3484 0.4410 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C C 0.7056 0.4410 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT