1981 DY1

1981DY1, 99969, J81D01Y

All data for this body: [vot]

MPC data
Name (number) 1981 DY1 (99969)
a 3.23131
e 0.16984
i / sin(i) 13.2408 / 0.22904
q 2.68251
Q 3.78012
ω 291.1694
Node 326.0286
m 194.4354
n 0.1697
Epoch 2460800.5
nobs 864
nopp 20
Years observed 1960-2025
rms 0.91
Best values
[raw, vot]

Value Standard error
Parent Meliboea (137)
 
ap 3.197
ep 0.192
sin(ip) 0.254
G 0.150
H 14.670
Mass
D 7.17 0.155
pV 0.064 0.0088
Value
Rotational Period
Period quality None
Spectral Class B
Spectral Class Score 1.895
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-Nov-2024
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
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
B B 0.0763 0.2250 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
B B 0.2396 0.2250 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT