Asteroids

2026RY3 help

Last update: 2026-09-09 22:15 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.870

Aphelion (Q)

1.410

Eccentricity (e)

0.237

Inclination (i)

16.9

deg

Orbit period (P)

444.5

Earth MOID

0.04155

U parameter

7.7

Next Earth close approach

Date

2048-03-16

Nominal distance (from Earth center)

0.08819

13193140

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.1

mag

Diameter

16 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-09-08

Observatory

MAPS, San Pedro de Atacama

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.139899

1-sigma variation

0.000496

Unit

Eccentricity (e)

Value

0.236665

1-sigma variation

0.000404

Unit

Inclination (i)

Value

16.8989

1-sigma variation

0.0252

Unit

Long. of Ascending Node (Ω)

Value

347.7479

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

273.1414

1-sigma variation

0.0332

Unit

Mean Anomaly (M)

Value

344.24976

1-sigma variation

0.02376

Unit

Perihelion distance

Value

0.870125

1-sigma variation

Unit

Aphelion distance

Value

1.409674

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.054823

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.097742

1-sigma variation

Unit

MOID

Value

0.041555

1-sigma variation

Unit

Orbit Period

Value

444.5269

1-sigma variation

Unit

U parameter

Value

7.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.46040E-7	1.99904E-7	1.24378E-5	-7.26118E-8	1.63619E-5	-1.17854E-5
e	1.99904E-7	1.63319E-7	1.00484E-5	-5.70334E-8	1.31873E-5	-9.58004E-6
i	1.24378E-5	1.00484E-5	6.33147E-4	-3.81406E-6	8.33489E-4	-5.95122E-4
Ω	-7.26118E-8	-5.70334E-8	-3.81406E-6	2.66249E-8	-5.05437E-6	3.46146E-6
ω	1.63619E-5	1.31873E-5	8.33489E-4	-5.05437E-6	1.10091E-3	-7.83399E-4
M	-1.17854E-5	-9.58004E-6	-5.95122E-4	3.46146E-6	-7.83399E-4	5.64729E-4

Date of computation: 2026-09-09 22:15 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

26.143

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

16 - 40*

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

Unit

Source

[1]

Normalized RMS of residuals

Value

0.538576

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-09-08.1848

Unit

Source

[2]

Last Observation

Value

2026-09-09.900596

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

24 (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

Filters

Initial Date: *

Final Date: *

Normalised Only accepted

Max residual (arcsec):

* - these fields are required

Plot

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 2026RY3 from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1953-09-04 23:31	> 1 d	0.0440771	0.0436694	0.0109277
EARTH	1975-03-16 05:50	> 1 d	0.1066221	0.0714438	0.1305658
EARTH	1981-09-02 17:22	> 1 d	0.1279419	0.0427590	0.1681836
EARTH	1992-03-17 08:28	1284.6	0.1051249	0.0719867	0.1062218
EARTH	1998-09-06 16:19	> 1 d	0.0569304	0.0426914	0.0848958
EARTH	2020-03-17 07:11	347.6	0.0731013	0.0725453	0.0027669
EARTH	2026-09-05 10:30	< 1 min	0.0425052	0.0423148	0.0000634
EARTH	2048-03-16 11:28	> 1 d	0.0881907	0.0731233	0.0452442
EARTH	2054-09-03 17:43	> 1 d	0.0886693	0.0408724	0.0902014
EARTH	2065-03-17 01:20	> 1 d	0.1416579	0.0771227	0.0955141
EARTH	2071-09-08 22:13	> 1 d	0.0980625	0.0404955	0.1009174
EARTH	2076-03-13 06:29	> 1 d	0.1959430	0.0726534	0.0911684
EARTH	2093-03-17 21:10	55.0	0.0770012	0.0746138	0.0046422
EARTH	2099-09-06 00:49	364.5	0.0406663	0.0405973	0.0004549
EARTH	2121-03-17 18:48	> 1 d	0.0974998	0.0751027	0.0791246

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
68.35702561	239.17374657	0.04155490	MINIMUM
289.63802679	71.42605034	0.07269860	MINIMUM
358.63122242	154.30412251	0.31193595	SADDLE
179.06187136	336.14132704	0.54782720	SADDLE
0.93298826	337.43657124	1.83495343	SADDLE
181.78098310	158.35624343	2.39971177	MAXIMUM

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MOID Plots

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