Asteroids

2026BY2 help

Last update: 2026-03-18 10:55 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.865

Aphelion (Q)

1.458

Eccentricity (e)

0.255

Inclination (i)

2.7

deg

Orbit period (P)

457.3

Earth MOID

0.00722

U parameter

7.3

Next Earth close approach

Date

2031-02-09

Nominal distance (from Earth center)

0.02642

3951801

Maximum Brightness

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.161661

1-sigma variation

0.000297

Unit

Eccentricity (e)

Value

0.255441

1-sigma variation

0.000281

Unit

Inclination (i)

Value

2.6686

1-sigma variation

0.0027

Unit

Long. of Ascending Node (Ω)

Value

128.8691

1-sigma variation

0.0015

Unit

Arg. of Perihelion (ω)

Value

75.9268

1-sigma variation

0.0002

Unit

Mean Anomaly (M)

Value

55.01488

1-sigma variation

0.01235

Unit

Perihelion distance

Value

0.864925

1-sigma variation

Unit

Aphelion distance

Value

1.458396

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.037495

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.142364

1-sigma variation

Unit

MOID

Value

0.007221

1-sigma variation

Unit

Orbit Period

Value

457.3171

1-sigma variation

Unit

U parameter

Value

7.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	8.82439E-8	8.35008E-8	8.00960E-7	4.49266E-7	-3.68289E-8	-3.66885E-6
e	8.35008E-8	7.90130E-8	7.57911E-7	4.25122E-7	-3.48029E-8	-3.47167E-6
i	8.00960E-7	7.57911E-7	7.27014E-6	4.07789E-6	-3.33906E-7	-3.33011E-5
Ω	4.49266E-7	4.25122E-7	4.07789E-6	2.28781E-6	-1.87280E-7	-1.86791E-5
ω	-3.68289E-8	-3.48029E-8	-3.33906E-7	-1.87280E-7	2.61383E-8	1.52713E-6
M	-3.66885E-6	-3.47167E-6	-3.33011E-5	-1.86791E-5	1.52713E-6	1.52539E-4

Date of computation: 2026-03-18 10:55 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

25.395

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

[-]

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

0.766611

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

2026-02-06.53541

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

43 (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

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 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	1967-01-26 02:58	> 1 d	0.1857776	0.0048871	0.1040314
EARTH	1972-02-03 22:46	> 1 d	0.0387723	0.0066396	0.0875666
EARTH	1977-02-09 19:03	> 1 w	0.0315805	0.0065269	0.0974004
EARTH	1982-03-22 08:59	> 1 mo	0.1273879	0.0527936	0.0252586
EARTH	1987-05-04 03:20	> 1 w	0.1407829	0.1305949	0.0034013
EARTH	1992-06-21 00:35	> 1 d	0.0693655	0.0251926	0.0170398
EARTH	1997-07-04 20:56	> 1 d	0.0528776	0.0236336	0.0495044
EARTH	2021-01-25 18:21	703.3	0.1890305	0.1527650	0.0120894
EARTH	2026-02-04 19:10	< 1 min	0.0252986	0.0252219	0.0000256
EARTH	2031-02-09 21:19	> 1 d	0.0264162	0.0070084	0.0114594
EARTH	2036-03-20 05:47	> 1 d	0.1251834	0.1110517	0.0047162
EARTH	2041-04-28 09:50	> 1 w	0.1432978	0.1313846	0.0039931
EARTH	2046-06-14 13:01	> 1 w	0.0889680	0.0190561	0.0453411
EARTH	2051-07-04 05:05	> 1 d	0.0350112	0.0230489	0.0482431
EARTH	2075-01-30 06:04	> 1 d	0.1220694	0.0076327	0.1170349
EARTH	2080-02-14 09:48	> 1 w	0.0502789	0.0064048	0.1208732
EARTH	2085-04-20 19:05	> 1 w	0.1439376	0.1398098	0.0014290
EARTH	2090-06-26 08:50	> 1 w	0.0495097	0.0226963	0.0693166
EARTH	2095-07-10 17:25	> 1 d	0.1286826	0.0217138	0.1428702
EARTH	2119-02-04 21:01	> 1 w	0.0452742	0.0079482	0.2680821
EARTH	2124-02-19 02:25	> 1 w	0.0672210	0.0046095	0.1038914

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
305.91589474	32.78647244	0.00722081	MINIMUM
61.60366407	175.83768887	0.02295539	MINIMUM
4.59098024	105.27385522	0.14520804	SADDLE
182.60301106	283.02146948	0.46495393	SADDLE
4.07054163	284.60353016	1.86088012	SADDLE
182.38919500	102.86175218	2.46118809	MAXIMUM

Download:

MOID Plots

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