Asteroids

2026BY1 help

Last update: 2026-02-01 12:45 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.853

Aphelion (Q)

1.691

Eccentricity (e)

0.329

Inclination (i)

1.9

deg

Orbit period (P)

524.1

Earth MOID

0.00483

U parameter

8.5

Next Earth close approach

Date

2026-02-09

Nominal distance (from Earth center)

0.02564

3836050

Maximum Brightness

21.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

17 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-01-18

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.272112

1-sigma variation

0.002192

Unit

Eccentricity (e)

Value

0.329427

1-sigma variation

0.001626

Unit

Inclination (i)

Value

1.8855

1-sigma variation

0.0087

Unit

Long. of Ascending Node (Ω)

Value

308.4747

1-sigma variation

0.0073

Unit

Arg. of Perihelion (ω)

Value

251.7150

1-sigma variation

0.0274

Unit

Mean Anomaly (M)

Value

272.61847

1-sigma variation

0.25032

Unit

Perihelion distance

Value

0.853044

1-sigma variation

Unit

Aphelion distance

Value

1.691179

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.249109

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.042093

1-sigma variation

Unit

MOID

Value

0.004828

1-sigma variation

Unit

Orbit Period

Value

524.0665

1-sigma variation

Unit

U parameter

Value

8.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.80511E-6	3.56325E-6	1.90949E-5	-1.58727E-5	5.95933E-5	5.48706E-4
e	3.56325E-6	2.64242E-6	1.41618E-5	-1.17739E-5	4.42222E-5	4.06882E-4
i	1.90949E-5	1.41618E-5	7.59215E-5	-6.31523E-5	2.37473E-4	2.18022E-3
Ω	-1.58727E-5	-1.17739E-5	-6.31523E-5	5.25823E-5	-1.98079E-4	-1.81204E-3
ω	5.95933E-5	4.42222E-5	2.37473E-4	-1.98079E-4	7.49775E-4	6.80069E-3
M	5.48706E-4	4.06882E-4	2.18022E-3	-1.81204E-3	6.80069E-3	6.26597E-2

Date of computation: 2026-02-01 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

26.001

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

17 - 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

0.208154

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-01-18.421969

Unit

Source

[2]

Last Observation

Value

2026-02-01.245532

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

21 (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 2026BY1 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	1960-02-12 22:29	> 1 mo	0.0516841	0.0028770	16.5343207
EARTH	1970-05-22 08:19	> 1 mo	0.1177047	0.0194623	4.6351598
EARTH	1983-02-03 04:22	> 1 mo	0.0302706	0.0038893	1.3666802
EARTH	1993-03-19 07:58	> 1 mo	0.1358627	0.0179808	0.3261312
EARTH	2003-05-16 03:58	> 1 mo	0.1293285	0.0214556	0.2585467
EARTH	2013-06-22 18:05	> 1 w	0.0257839	0.0210052	0.1114437
EARTH	2026-02-09 04:01	1.5	0.0256424	0.0252832	0.0001198
EARTH	2036-05-31 23:53	> 1 mo	0.0985788	0.0190208	0.1118090
EARTH	2049-02-06 21:31	> 1 w	0.0089031	0.0050120	0.2233858
EARTH	2062-02-23 20:44	> 1 mo	0.0890360	0.0014983	4.9079940
EARTH	2075-04-09 12:54	> 1 mo	0.1490439	0.0642842	0.5557462
EARTH	2088-05-22 08:18	> 1 mo	0.1151318	0.0166275	4.5330077
EARTH	2101-06-20 04:04	> 1 mo	0.0225252	0.0199073	2.0478115
EARTH	2104-01-27 22:09	> 1 mo	0.1575858	0.0062453	11.1352772
EARTH	2114-06-21 19:18	> 1 mo	0.0199742	0.0199270	2.0658440
EARTH	2117-01-28 17:38	> 1 mo	0.1330618	0.0058632	136.2670656

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
312.81960286	35.13410301	0.00482772	MINIMUM
52.94211238	168.77903318	0.02086300	MINIMUM
3.55286680	102.74206885	0.15374397	SADDLE
181.71690610	280.67142258	0.69460463	SADDLE
3.26721219	282.34658395	1.85033590	SADDLE
181.63974284	100.62035934	2.69451115	MAXIMUM

Download:

MOID Plots

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