Asteroids

2018RY6 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.771

Aphelion (Q)

3.431

Eccentricity (e)

0.633

Inclination (i)

5.2

deg

Orbit period (P)

1112.1

Earth MOID

0.02851

U parameter

9.0

Next Earth close approach

Date

2079-03-23

Nominal distance (from Earth center)

0.11427

17094686

Maximum Brightness

20.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

22.7

mag

Diameter

80 - 170*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2018-09-12

Observatory

Mt. Lemmon Survey

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

2.100690

1-sigma variation

0.057572

Unit

Eccentricity (e)

Value

0.633158

1-sigma variation

0.013792

Unit

Inclination (i)

Value

5.2172

1-sigma variation

0.1279

Unit

Long. of Ascending Node (Ω)

Value

172.9035

1-sigma variation

0.1863

Unit

Arg. of Perihelion (ω)

Value

84.5009

1-sigma variation

0.4788

Unit

Mean Anomaly (M)

Value

156.03892

1-sigma variation

38.73330

Unit

Perihelion distance

Value

0.770621

1-sigma variation

Unit

Aphelion distance

Value

3.430759

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.191424

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.333806

1-sigma variation

Unit

MOID

Value

0.028505

1-sigma variation

Unit

Orbit Period

Value

1112.0940

1-sigma variation

Unit

U parameter

Value

9.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.31460E-3	7.94057E-4	7.35664E-3	1.07239E-2	-2.75428E-2	-2.22998E0
e	7.94057E-4	1.90228E-4	1.76251E-3	2.56911E-3	-6.59877E-3	-5.34222E-1
i	7.35664E-3	1.76251E-3	1.63501E-2	2.38092E-2	-6.12248E-2	-4.94932E0
Ω	1.07239E-2	2.56911E-3	2.38092E-2	3.46986E-2	-8.91441E-2	-7.21478E0
ω	-2.75428E-2	-6.59877E-3	-6.12248E-2	-8.91441E-2	2.29274E-1	1.85299E1
M	-2.22998E0	-5.34222E-1	-4.94932E0	-7.21478E0	1.85299E1	1.50027E3

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

22.717

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

80 - 170*

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

Unit

Source

[-]

Download this part as:

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

2602

Unit

Source

[1]

Normalized RMS of residuals

Value

0.660723

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2018-09-12.2834

Unit

Source

[2]

Last Observation

Value

2018-09-17.40536

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

27 (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

Unit

Source

[-]

Last Observation

Value

Unit

Source

[-]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[-]

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

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 2018RY6 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
7 Iris	1981-07-31 10:16	> 1 mo	0.0165136	0.0075198	23.2738460
EARTH	2009-03-30 13:40	> 1 mo	0.0268699	0.0265430	0.3522587
EARTH	2012-04-29 18:36	> 1 mo	0.1986298	0.0066647	1.0532157
EARTH	2018-08-03 12:56	60.0	0.1418609	0.1318355	0.0033419
EARTH	2021-08-27 00:32	> 1 mo	0.1294719	0.0415267	0.8329631
MARS	2058-04-19 01:34	> 1 mo	0.0431893	0.0282713	6.6271271
EARTH	2079-03-23 20:21	> 1 mo	0.1142709	0.0273149	12.0748679
EARTH	2082-04-08 06:33	> 1 mo	0.0920555	0.0273679	9.6738195
EARTH	2094-08-15 00:53	> 1 w	0.0823240	0.0260850	0.1205981
EARTH	2097-08-30 18:25	> 1 mo	0.1396258	0.0321694	2.5703647

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
325.46383132	87.58898241	0.02834718	MINIMUM
35.57854268	224.12487258	0.04278498	MINIMUM
0.79170083	156.30930626	0.25813367	SADDLE
0.62283526	335.95926699	1.75277022	SADDLE
180.15877542	335.31716151	2.45112747	SADDLE
180.12885730	155.30637828	4.44215821	MAXIMUM

Download:

MOID Plots

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