Asteroids

2016LY8 help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.887

Aphelion (Q)

1.937

Eccentricity (e)

0.372

Inclination (i)

1.7

deg

Orbit period (P)

612.7

Earth MOID

0.01706

U parameter

0.0

Next Earth close approach

Date

2026-09-25

Nominal distance (from Earth center)

0.08785

13142335

Maximum Brightness

23.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

22.9

mag

Diameter

70 - 160*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2016-06-05

Observatory

ATLAS-HKO, Haleakala

ORBIT VISUALISATION TOOLS

External links

Proper elements

Epoch

Near present day

Near middle of observation arc

Orbit properties

Epoch
Semimajor Axis
Eccentricity (e)
Inclination (i)
Long. of Ascending Node (Ω)
Arg. of Perihelion (ω)
Mean Anomaly (M)
Perihelion distance
Aphelion distance
Asc. Node-Earth Sep.
Desc. Node-Earth Sep.
MOID
Orbit Period
U parameter

Value

1-sigma variation

Unit

Epoch

Value

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.411774

1-sigma variation

3.954E-9

Unit

Eccentricity (e)

Value

0.371804

1-sigma variation

2.828E-8

Unit

Inclination (i)

Value

1.7168

1-sigma variation

4.237E-6

Unit

Long. of Ascending Node (Ω)

Value

124.3739

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

203.9706

1-sigma variation

0.0001

Unit

Mean Anomaly (M)

Value

195.00559

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.886870

1-sigma variation

Unit

Aphelion distance

Value

1.936678

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.857174

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.108505

1-sigma variation

Unit

MOID

Value

0.017060

1-sigma variation

Unit

Orbit Period

Value

612.6977

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.56368E-17	-8.67671E-18	7.65385E-16	9.67962E-14	-7.96557E-14	-4.29990E-14
e	-8.67671E-18	7.99850E-16	8.73181E-15	-8.04910E-13	8.99157E-13	1.26321E-14
i	7.65385E-16	8.73181E-15	1.79527E-11	-5.49447E-10	5.50785E-10	-2.21813E-12
Ω	9.67962E-14	-8.04910E-13	-5.49447E-10	2.19064E-8	-2.17854E-8	-2.91941E-10
ω	-7.96557E-14	8.99157E-13	5.50785E-10	-2.17854E-8	2.17188E-8	2.31775E-10
M	-4.29990E-14	1.26321E-14	-2.21813E-12	-2.91941E-10	2.31775E-10	1.25199E-10

Date of computation: 2025-09-10 00:30 UTC

Note: The ASCII file is in a format suitable for Orbfit input.

Download ASCII file:

Physical properties

Rotation Period
Quality
Amplitude
Rotation Direction
Spinvector L
Spinvector B

Rotational properties

Value

Unit

Source

Rotation Period

Value

Unit

Source

[-]

Quality

Value

Unit

Source

[-]

Amplitude

Value

Unit

mag

Source

[-]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

Unit

Source

[-]

Spinvector B

Value

Unit

Source

[-]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Unit

Source

[-]

Taxonomy (all)

Value

Unit

Source

[-]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

22.904

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

70 - 160*

Unit

Source

[2]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Radar R

Unit

Source

[3]

Download this part as:

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude
[3]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

1832

Unit

Source

[1]

Unobserved

Value

1562

Unit

Source

[1]

Normalized RMS of residuals

Value

0.495805

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2016-06-05.45937

Unit

Source

[2]

Last Observation

Value

2021-06-11.32876

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

179 (0)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

2016-06-13

Unit

Source

[3]

Last Observation

Value

2016-06-13

Unit

Source

[3]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

1 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

1 (0)

Unit

Source

[1]

Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	MPC	Minor Planet Center: https://www.minorplanetcenter.net
[3]	JPL Radar Observations	Jet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Close Approaches for 2016LY8 from 1950 to 2125

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1974-06-09 09:30	< 1 min	0.1482344	0.1482335	0.0000003
EARTH	1979-07-10 18:14	< 1 min	0.0814965	0.0814955	0.0000003
EARTH	1984-09-21 22:42	< 1 min	0.0924593	0.0924581	0.0000004
EARTH	1989-10-26 15:45	< 1 min	0.1446351	0.1446332	0.0000006
EARTH	2016-06-18 13:11	< 1 s	0.0342633	0.0342632	0.0000000
EARTH	2021-07-30 01:04	< 1 min	0.1141934	0.1141932	0.0000000
EARTH	2026-09-25 12:10	< 1 min	0.0878511	0.0878505	0.0000002
EARTH	2031-10-24 02:36	< 1 min	0.0933792	0.0933782	0.0000004
EARTH	2063-06-14 03:59	< 1 min	0.0941391	0.0941381	0.0000003
EARTH	2068-07-08 21:09	< 1 min	0.0769681	0.0769675	0.0000002
EARTH	2073-09-03 22:28	< 1 min	0.1191508	0.1191507	0.0000000
EARTH	2078-10-19 05:01	< 1 min	0.0413066	0.0413061	0.0000002
EARTH	2105-06-09 22:30	< 1 min	0.1714578	0.1714551	0.0000009
MARS	2110-03-06 02:24	< 1 min	0.0263143	0.0263124	0.0000006
EARTH	2110-07-06 19:54	< 1 min	0.0655585	0.0655562	0.0000007
EARTH	2115-09-17 08:40	< 1 min	0.1059024	0.1059015	0.0000003
EARTH	2120-10-27 03:48	< 1 s	0.1210150	0.1210144	0.0000002

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
319.27522140	168.46012887	0.01679469	MINIMUM
37.55344249	280.36707543	0.02913083	MINIMUM
358.48776185	224.61259398	0.12466315	SADDLE
179.20228087	45.21770327	0.94822263	SADDLE
358.20869763	44.17753010	1.87556913	SADDLE
179.11826931	225.15334159	2.94784765	MAXIMUM

Download:

MOID Plots

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