Miahelena

02911, 1928 DL, 1928DL, 1938 GJ, 1938GJ, 1942 CM, 1942CM, 1952 HQ1, 1952HQ1, 1952 HZ1, 1952HZ1, 1971 HK, 1971HK, 1975 EF2, 1975EF2, 1977 TE6, 1977TE6, J28D00L, J38G00J, J42C00M, J52H01Q, J52H01Z, J71H00K, J75E02F, J77T06E

All data for this body: [vot]

MPC data

Name (number)	Miahelena (2911)
a	2.79508
e	0.09550
i / sin(i)	9.6148 / 0.16702
q	2.52817
Q	3.06200
ω	64.0743
Node	149.1548
m	219.1143
n	0.2109
Epoch	2460800.5

n_obs	8746
n_opp	33
Years observed	1938-2025
rms	0.48

Best values

[raw, vot]

	Value	Standard error
Parent	Gefion (1272)

a_p	2.794
e_p	0.131
sin(i_p)	0.158
G	0.150
H	11.890
Mass
D	12.34	0.189
pV	0.257	0.0420

	Value
Rotational Period	4.200
Period quality	3
Spectral Class	S
Spectral Class Score	50.966

Family data

[raw, vot]

Parent	Parent name	Family ID	Family name	C_j	Author	Reference	Method
1272	Gefion	0	Gefion		Novakovic	2019EPSC...13.1671N	HCM
1272	Gefion	516	Gefion	0.6400	Nesvorny	doi.org/10.26033/6cg5-pt13	HCM-2020-08-14

Proper elements data

[raw, vot]

a_p	e_p	sin(i_p)	Author	Reference	Method
2.7942	0.1311	0.1578	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Nov-2024

Diameter data

[raw, vot]

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
12.21	0.192	0.192	Masiero	2011ApJ...741...68M	NEATM
16.34	1.140	1.140	Usui	2011PASJ...63.1117U	NEATM
16.75	3.350	3.350	Ali-Lagoa	2018A&A...612A..85A	NEATM

Albedo data

[raw, vot]

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.151	0.0600	0.0600	Ali-Lagoa	2018A&A...612A..85A	NEATM
0.357	0.0587	0.0587	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
11.89			MPC-2023-12-04	MPC-2023-12-04	Phot

Periods

[raw, vot]

Value	Quality	Side real or Synodic	Author	Reference	Method
1.1		Synodic	Erasmus	2018ApJS..237...19E	Lightcurve
1.1		Synodic	Erasmus	2019ApJS..242...15E	Lightcurve
4.02		Synodic	Erasmus	2018ApJS..237...19E	Lightcurve
4.02	2	Synodic	Erasmus	2019ApJS..242...15E	Lightcurve
4.19	3-	Synodic	Brinsfield	2008MPBu...35..119B	Lightcurve
4.201	3	Synodic	Warner	2014MPBu...41...27W	Lightcurve
4.201878	2	Sidereal	Durech	2018A&A...617A..57D	Model
4.20188	2	Sidereal	Durech	2023A&A...675A..24D	Model
4.202	2	Synodic	Waszczak	2015AJ....150...75W	Lightcurve
4.202	3	Synodic	Klinglesmith	2013MPBu...40..190K	Lightcurve

Spectral Class Data

[raw, vot]

Class 1	Class 2	Probability of Class 1	Taxonomy	Wavelength	Author	Reference	Method
L		0.981	Bus-Demeo	VIS	Sergeyev	2022A&A...658A.109S	PHOT
S			Bus	VIS	Bus	2002Icar..158..146B	SPEC
S			Bus	VIS	Lazzaro	2004Icar..172..179L	SPEC
S			Tholen	VIS	Lazzaro	2004Icar..172..179L	SPEC
S		0.898000	Bus-DeMeo	VIS	Erasmus	2018ApJS..237...19E	PHOT
S		0.901000	Bus-DeMeo	VIS	Erasmus	2019ApJS..242...15E	PHOT
S		0.929000	Bus-DeMeo	VIS	Erasmus	2019ApJS..242...15E	PHOT
S		0.933000	Bus-DeMeo	VIS	Erasmus	2018ApJS..237...19E	PHOT
S		1.000000	Mahlke	VIS	Mahlke	2022A&A...665A..26M	SPEC
S		1.000000	Mahlke	VISNIR	Mahlke	2022A&A...665A..26M	SPEC
S	S		DeMeo-Carry	VIS	Choi	2023PSJ.....4...49C	PHOT
Sw			Bus-DeMeo	VISNIR	DeMeo	2009Icar..202..160D	SPEC