Asteroids

2026RY1 help

Last update: 2026-09-08 13:00 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.950

Aphelion (Q)

1.360

Eccentricity (e)

0.177

Inclination (i)

0.7

deg

Orbit period (P)

453.3

Earth MOID

0.00345

U parameter

6.9

Next Earth close approach

Date

2027-02-09

Nominal distance (from Earth center)

0.19044

28488734

Maximum Brightness

29.1

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

31.1

mag

Diameter

1.6 - 4*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-09-05

Observatory

Kitt Peak-Bok

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

1.154843

1-sigma variation

0.000145

Unit

Eccentricity (e)

Value

0.177229

1-sigma variation

0.000131

Unit

Inclination (i)

Value

0.6529

1-sigma variation

0.0004

Unit

Long. of Ascending Node (Ω)

Value

329.6024

1-sigma variation

0.0020

Unit

Arg. of Perihelion (ω)

Value

69.0358

1-sigma variation

0.0016

Unit

Mean Anomaly (M)

Value

249.21901

1-sigma variation

0.02578

Unit

Perihelion distance

Value

0.950171

1-sigma variation

Unit

Aphelion distance

Value

1.359515

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.040179

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.205894

1-sigma variation

Unit

MOID

Value

0.003452

1-sigma variation

Unit

Orbit Period

Value

453.2970

1-sigma variation

Unit

U parameter

Value

6.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.10533E-8	1.89406E-8	5.24206E-8	-2.45356E-7	-1.10051E-7	3.73985E-6
e	1.89406E-8	1.70410E-8	4.71094E-8	-2.21776E-7	-9.75231E-8	3.36430E-6
i	5.24206E-8	4.71094E-8	1.33090E-7	-5.58419E-7	-3.45367E-7	9.32262E-6
Ω	-2.45356E-7	-2.21776E-7	-5.58419E-7	3.93475E-6	-1.81374E-7	-4.33626E-5
ω	-1.10051E-7	-9.75231E-8	-3.45367E-7	-1.81374E-7	2.59355E-6	-1.98660E-5
M	3.73985E-6	3.36430E-6	9.32262E-6	-4.33626E-5	-1.98660E-5	6.64392E-4

Date of computation: 2026-09-08 13:00 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

31.098

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

1.6 - 4*

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

[-]

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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

0.684222

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-09-05.307377

Unit

Source

[2]

Last Observation

Value

2026-09-07.85836

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

20 (1)

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 2026RY1 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	1957-09-03 10:24	> 1 mo	0.0266263	0.0028167	24.7411648
EARTH	1958-01-23 02:57	> 1 mo	0.1986478	0.0341405	17.3279463
EARTH	1962-12-20 20:11	> 1 mo	0.1344684	0.0141291	26.5625479
EARTH	1981-10-01 01:29	> 1 mo	0.0328460	0.0002105	1.9081960
EARTH	2000-09-07 12:22	> 1 d	0.0059117	0.0030039	0.0174100
EARTH	2001-01-27 16:02	> 1 w	0.1878938	0.1447893	0.0144121
EARTH	2021-12-19 07:18	899.9	0.0495886	0.0323122	0.0058345
EARTH	2026-09-09 10:15	< 1 min	0.0039053	0.0038969	0.0000028
EARTH	2027-02-09 02:02	205.0	0.1904354	0.1900334	0.0001340
EARTH	2043-08-30 02:11	> 1 d	0.0809030	0.0195227	0.0205139
EARTH	2049-12-30 01:03	844.6	0.0843898	0.0632720	0.0070395
EARTH	2066-07-22 22:25	> 1 mo	0.1874704	0.1062941	0.0270818
EARTH	2066-12-18 17:34	> 1 w	0.0023747	0.0012416	0.0343725
EARTH	2073-08-14 15:09	> 1 mo	0.0596815	0.0105713	15.5881491
EARTH	2088-07-16 10:55	> 1 mo	0.1461421	0.0257374	11.6620560
EARTH	2088-11-03 04:33	> 1 mo	0.0609324	0.0110193	3.5288892
EARTH	2103-12-28 01:09	> 1 mo	0.0650400	0.0003565	16.2908239
EARTH	2110-08-19 20:17	> 1 mo	0.0243391	0.0112420	11.7426042
EARTH	2119-01-01 23:01	> 1 mo	0.1080635	0.0019152	79.4073226
EARTH	2125-08-08 00:53	> 1 mo	0.1824111	0.0113502	103.6744392

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
315.84734300	243.32277726	0.00345219	MINIMUM
34.11843186	334.95382799	0.01065483	MINIMUM
355.12984752	289.35292567	0.04486583	SADDLE
176.36676660	110.53490442	0.35332278	SADDLE
354.69381993	108.84486046	1.95632744	SADDLE
176.35743152	290.53479210	2.35318987	MAXIMUM

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MOID Plots

Click on the images to zoom-in and zoom-out

Level lines of the squared distance function

2026RY1

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2060-12-19.577	73812.577	4.907	0.000	2.54 ± 0.022	2.48E5	3.31E-11	2.25E-4	-13.42
2064-12-13.816	75267.816	-4.500	0.000	0.62 ± 0.022	4.19E6	2.30E-11	2.21E-4	-13.63
2070-12-13.898	77458.898	4.449	0.000	1.48 ± 0.038	1.22E4	8.89E-9	2.25E-4	-11.10
2070-12-15.899	77460.899	3.097	0.000	2.45 ± 0.000	1.02E8	1.32E-10	2.25E-4	-12.93
2072-12-21.184	78197.184	-3.256	0.000	1.62 ± 0.021	3.18E5	3.27E-8	2.21E-4	-10.56
2073-12-15.399	78556.399	3.207	0.000	2.86 ± 0.067	1.29E7	8.41E-10	2.24E-4	-12.15
2078-12-14.080	80381.080	0.138	0.000	0.37 ± 0.253	4.95E7	4.83E-8	2.23E-4	-10.44
2078-12-14.103	80381.103	0.138	0.000	1.78 ± 0.063	6.91E6	2.88E-7	2.23E-4	-9.66
2078-12-19.866	80386.866	2.607	0.000	2.04 ± 0.032	1.35E8	4.54E-10	2.24E-4	-12.46
2081-12-14.367	81477.367	-0.188	0.000	1.63 ± 0.031	3.01E5	6.98E-6	2.23E-4	-8.30
2086-12-24.099	83313.099	3.483	0.000	1.28 ± 0.048	3.97E4	1.31E-7	2.24E-4	-10.07
2086-12-24.124	83313.124	3.495	0.000	2.65 ± 0.057	1.58E4	2.67E-7	2.24E-4	-9.76
2087-12-25.828	83679.828	3.329	0.000	1.90 ± 0.093	1.04E6	7.89E-9	2.24E-4	-11.29
2089-12-19.548	84404.548	-0.087	0.000	2.77 ± 2.036	2.08E5	5.05E-6	2.23E-4	-8.50
2089-12-21.614	84406.614	-1.107	0.000	1.13 ± 0.148	1.19E6	1.05E-6	2.22E-4	-9.19
2090-09-03.755	84662.755	3.808	0.000	1.64 ± 0.037	1.21E6	1.23E-9	2.25E-4	-12.11
2093-12-19.831	85865.831	0.050	0.000	1.06 ± 0.000	7.48E7	3.07E-8	2.23E-4	-10.74
2095-12-18.624	86594.624	3.268	0.000	1.01 ± 0.089	9.76E6	1.14E-9	2.24E-4	-12.19
2097-12-18.438	87325.438	-0.046	0.000	1.27 ± 0.011	4.96E7	4.49E-8	2.23E-4	-10.60
2098-12-22.473	87694.473	-0.214	0.000	1.96 ± 0.143	3.64E6	6.32E-7	2.23E-4	-9.46
2103-12-15.140	89512.140	0.095	0.000	2.38 ± 0.000	3.99E7	4.16E-8	2.23E-4	-10.67
2103-12-19.327	89516.327	-0.027	0.000	2.99 ± 0.071	2.44E7	2.35E-8	2.23E-4	-10.92
2103-12-22.417	89519.417	0.016	0.000	0.53 ± 0.000	6.24E8	3.88E-9	2.23E-4	-11.70
2104-12-14.794	89877.794	-0.188	0.000	2.36 ± 0.253	2.06E8	7.71E-9	2.22E-4	-11.41
2105-12-14.628	90242.628	-0.661	0.000	1.10 ± 0.032	5.99E6	3.08E-7	2.22E-4	-9.81
2109-12-14.040	91703.040	-1.010	0.000	1.58 ± 0.095	3.51E6	3.72E-7	2.22E-4	-9.75
2110-12-25.331	92079.331	-0.596	0.000	1.17 ± 0.877	7.44E7	2.40E-8	2.22E-4	-10.95
2111-12-22.349	92441.349	-0.010	0.000	0.80 ± 0.068	1.09E7	2.16E-7	2.23E-4	-10.00
2111-12-23.758	92442.758	0.087	0.000	1.28 ± 0.016	7.94E6	2.81E-7	2.23E-4	-9.89
2111-12-25.640	92444.640	3.127	0.000	2.13 ± 0.155	2.31E8	6.38E-11	2.24E-4	-13.53
2112-12-18.657	92803.657	-0.062	0.000	2.66 ± 0.000	4.49E8	2.83E-9	2.22E-4	-11.89
2112-12-19.074	92804.074	-0.061	0.000	2.47 ± 0.000	1.78E7	1.34E-7	2.23E-4	-10.21
2113-12-19.109	93169.109	-0.071	0.000	2.13 ± 0.011	2.03E7	8.66E-8	2.23E-4	-10.41
2114-12-24.938	93539.938	0.624	0.000	0.90 ± 0.035	5.38E6	3.58E-7	2.23E-4	-9.79
2114-12-26.529	93541.529	-2.907	0.000	1.20 ± 0.028	1.47E6	2.26E-8	2.21E-4	-11.00
2115-12-26.767	93906.767	3.037	0.000	2.60 ± 0.310	1.18E8	1.10E-10	2.24E-4	-13.31
2117-12-14.161	94625.161	1.101	0.000	2.44 ± 0.179	3.08E7	3.34E-8	2.23E-4	-10.84
2118-12-24.967	95000.967	0.097	0.000	1.25 ± 1.432	3.17E8	6.01E-9	2.23E-4	-11.59
2120-12-20.095	95727.095	1.110	0.000	1.22 ± 0.293	1.96E7	6.19E-8	2.23E-4	-10.58
2120-12-24.196	95731.196	0.354	0.000	2.83 ± 0.027	6.68E6	1.64E-7	2.23E-4	-10.16
2120-12-25.663	95732.663	-2.708	0.000	2.01 ± 0.023	1.52E5	3.12E-7	2.21E-4	-9.88
2121-12-15.882	96087.882	1.665	0.000	0.55 ± 0.000	9.88E7	6.06E-9	2.24E-4	-11.60
2123-12-17.480	96819.480	-0.138	0.000	2.22 ± 0.620	1.11E8	1.45E-8	2.23E-4	-11.23
2123-12-19.980	96821.980	-0.059	0.000	0.36 ± 0.045	1.60E7	1.52E-7	2.23E-4	-10.21
2123-12-20.086	96822.086	-0.060	0.000	2.49 ± 0.018	2.04E7	7.09E-8	2.23E-4	-10.54
2123-12-22.555	96824.555	0.162	0.000	2.75 ± 0.000	6.54E7	2.18E-8	2.23E-4	-11.05
2124-12-17.980	97185.980	-0.900	0.000	2.87 ± 0.059	1.65E7	7.68E-8	2.22E-4	-10.51
2125-12-14.276	97547.276	-0.919	0.650	3.11 ± 0.025	6.17E6	6.07E-9	2.22E-4	-11.62


Based on 20 optical observations (of which 1 are rejected as outliers) from 2026/09/05.307 to 2026/09/07.858.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 3.07 and 3.07 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20260908 134954.284 UTC.

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