Asteroids

2026BY2 help

Last update: 2026-01-26 12:45 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.866

Aphelion (Q)

1.462

Eccentricity (e)

0.256

Inclination (i)

2.7

deg

Orbit period (P)

458.7

Earth MOID

0.00711

U parameter

7.5

Next Earth close approach

Date

2026-02-04

Nominal distance (from Earth center)

0.02526

3779421

Maximum Brightness

20.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.4

mag

Diameter

22 - 50*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-01-18

Observatory

Pan-STARRS 1, 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

1.164014

1-sigma variation

0.000397

Unit

Eccentricity (e)

Value

0.255898

1-sigma variation

0.000377

Unit

Inclination (i)

Value

2.6744

1-sigma variation

0.0036

Unit

Long. of Ascending Node (Ω)

Value

128.9324

1-sigma variation

0.0018

Unit

Arg. of Perihelion (ω)

Value

75.4752

1-sigma variation

0.0030

Unit

Mean Anomaly (M)

Value

258.08604

1-sigma variation

0.06330

Unit

Perihelion distance

Value

0.866145

1-sigma variation

Unit

Aphelion distance

Value

1.461882

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.036932

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.146012

1-sigma variation

Unit

MOID

Value

0.007114

1-sigma variation

Unit

Orbit Period

Value

458.7071

1-sigma variation

Unit

U parameter

Value

7.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.57997E-7	1.49655E-7	1.43103E-6	7.14302E-7	4.00121E-7	2.51607E-5
e	1.49655E-7	1.41964E-7	1.35715E-6	6.76001E-7	4.20229E-7	2.38205E-5
i	1.43103E-6	1.35715E-6	1.29758E-5	6.46211E-6	3.95468E-6	2.27795E-4
Ω	7.14302E-7	6.76001E-7	6.46211E-6	3.24011E-6	1.68538E-6	1.13784E-4
ω	4.00121E-7	4.20229E-7	3.95468E-6	1.68538E-6	9.10282E-6	6.14120E-5
M	2.51607E-5	2.38205E-5	2.27795E-4	1.13784E-4	6.14120E-5	4.00745E-3

Date of computation: 2026-01-26 12:45 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

25.422

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

22 - 50*

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

0.505404

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-01-18.420682

Unit

Source

[2]

Last Observation

Value

2026-01-26.44869

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 2026BY2 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	1972-02-05 20:52	> 1 mo	0.0180009	0.0064864	2.3143267
EARTH	1977-02-08 02:42	> 1 mo	0.0164733	0.0065189	0.4506584
EARTH	1982-03-25 15:47	> 1 mo	0.1302193	0.0228271	0.1270927
EARTH	1987-05-14 17:14	> 1 mo	0.1322011	0.0175665	0.0716169
EARTH	1992-06-29 15:14	> 1 w	0.0267379	0.0237884	0.0314627
EARTH	1997-07-09 13:23	> 1 d	0.1254349	0.0228575	0.0735838
EARTH	2021-01-26 14:20	995.1	0.1725552	0.1233218	0.0164140
EARTH	2026-02-04 19:10	< 1 min	0.0252639	0.0251594	0.0000348
EARTH	2031-02-08 00:22	> 1 d	0.0116059	0.0071641	0.0127967
EARTH	2036-04-03 00:56	> 1 w	0.1376922	0.1232412	0.0048185
EARTH	2041-06-01 00:13	> 1 mo	0.1103658	0.0097056	0.0414675
EARTH	2046-07-05 17:34	> 1 d	0.0618240	0.0233613	0.0929390
EARTH	2065-01-28 02:00	> 1 d	0.1485956	0.0623491	0.0288085
EARTH	2070-02-15 20:46	> 1 w	0.0595970	0.0046058	0.0574279
EARTH	2075-05-03 21:06	> 1 mo	0.1396399	0.1160719	0.0081421
EARTH	2080-07-03 00:55	> 1 d	0.0349435	0.0216185	0.0337967
MARS	2088-05-24 12:23	> 1 w	0.0393965	0.0098721	0.0140361
EARTH	2099-02-26 14:48	> 1 mo	0.0874689	0.0020666	0.0895400
EARTH	2104-06-11 15:53	> 1 mo	0.0931670	0.0154565	0.0847219
EARTH	2123-02-08 10:27	350.0	0.0100743	0.0084386	0.0049682

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
306.17146330	35.70119692	0.00711425	MINIMUM
61.51402359	178.52096187	0.02340900	MINIMUM
4.69464637	108.09824018	0.14563381	SADDLE
182.65697805	285.78743498	0.46869157	SADDLE
4.15134924	287.39929449	1.86182302	SADDLE
182.44238931	105.62865466	2.46627907	MAXIMUM

Download:

MOID Plots

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