1981 SN1

1981SN1, 07990, 1988 DL2, 1988DL2, J81S01N, J88D02L

All data for this body: [vot]

MPC data
Name (number) 1981 SN1 (7990)
a 3.04924
e 0.31506
i / sin(i) 2.3439 / 0.04090
q 2.08853
Q 4.00995
ω 231.2097
Node 144.9289
m 307.4046
n 0.1851
Epoch 2460200.5
nobs 1673
nopp 26
Years observed 1949-2023
rms 0.73
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.052
ep 0.274
sin(ip) 0.032
Value Standard error
G 0.150
H 14.080
Mass
D 8.67 0.503
pV 0.123 0.0264
Rotational Period
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.0516 0.2743 0.0318 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Oct-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
8.67 0.503 0.503 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.123 0.0264 0.0264 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
14.08 MPC-2023-12-04 MPC-2023-12-04 Phot