1981 DY1

1981DY1, 99969, J81D01Y

All data for this body: [vot]

MPC data
Name (number) 1981 DY1 (99969)
a 3.21944
e 0.17250
i / sin(i) 13.2333 / 0.22892
q 2.66409
Q 3.77479
ω 289.1124
Node 326.7952
m 93.9501
n 0.1706
Epoch 2460200.5
nobs 822
nopp 19
Years observed 1960-2023
rms 0.71
Best values
[raw, vot]

Value Standard error
Parent Meliboea (137)
 
ap 3.197
ep 0.192
sin(ip) 0.254
Value Standard error
G 0.150
H 14.670
Mass
D 7.17 0.155
pV 0.064 0.0088
Rotational Period
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
137 Meliboea 604 Meliboea Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1972 0.1920 0.2539 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Oct-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.08 0.270 0.270 Masiero 2012ApJ...759L...8M NEATM
7.71 0.189 0.189 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.052 0.0113 0.0113 Masiero 2011ApJ...741...68M NEATM
0.083 0.0140 0.0140 Masiero 2012ApJ...759L...8M 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
14.67 MPC-2023-12-04 MPC-2023-12-04 Phot