Asteroids

2026BD4 help

Last update: 2026-01-31 12:45 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.877

Aphelion (Q)

1.308

Eccentricity (e)

0.197

Inclination (i)

2.9

deg

Orbit period (P)

417.0

Earth MOID

0.00974

U parameter

6.7

Next Earth close approach

Date

2034-02-09

Nominal distance (from Earth center)

0.06224

9310385

Maximum Brightness

25.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.6

mag

Diameter

8 - 18*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-01-20

Observatory

Pan-STARRS 2, 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

1.092333

1-sigma variation

0.000107

Unit

Eccentricity (e)

Value

0.197033

1-sigma variation

0.000152

Unit

Inclination (i)

Value

2.8627

1-sigma variation

0.0022

Unit

Long. of Ascending Node (Ω)

Value

115.5623

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

87.6562

1-sigma variation

0.0033

Unit

Mean Anomaly (M)

Value

246.32235

1-sigma variation

0.02087

Unit

Perihelion distance

Value

0.877108

1-sigma variation

Unit

Aphelion distance

Value

1.307559

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.057667

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.040647

1-sigma variation

Unit

MOID

Value

0.009743

1-sigma variation

Unit

Orbit Period

Value

416.9954

1-sigma variation

Unit

U parameter

Value

6.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.14439E-8	1.62167E-8	2.31784E-7	2.38389E-9	3.57162E-7	2.23254E-6
e	1.62167E-8	2.29809E-8	3.28498E-7	3.42349E-9	5.06283E-7	3.16355E-6
i	2.31784E-7	3.28498E-7	4.69774E-6	5.17916E-8	7.24225E-6	4.52120E-5
Ω	2.38389E-9	3.42349E-9	5.17916E-8	4.78735E-9	8.18517E-8	4.59325E-7
ω	3.57162E-7	5.06283E-7	7.24225E-6	8.18517E-8	1.11797E-5	6.96584E-5
M	2.23254E-6	3.16355E-6	4.52120E-5	4.59325E-7	6.96584E-5	4.35549E-4

Date of computation: 2026-01-31 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

27.583

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

8 - 18*

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

0.525134

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-01-20.360191

Unit

Source

[2]

Last Observation

Value

2026-01-31.143642

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

32 (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 2026BD4 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	1954-02-01 22:53	172.1	0.0183278	0.0159451	0.0009752
EARTH	1962-02-06 21:34	271.0	0.0413782	0.0377545	0.0012179
EARTH	1970-01-05 11:02	> 1 d	0.1785652	0.1743000	0.0014228
EARTH	1970-04-02 02:09	> 1 d	0.1272789	0.1258058	0.0004911
EARTH	1978-05-23 03:01	> 1 d	0.1160773	0.1143391	0.0005800
EARTH	1986-07-06 05:43	280.0	0.0160980	0.0129862	0.0011165
EARTH	1994-06-22 06:29	> 1 d	0.0770613	0.0679114	0.0030507
EARTH	2002-05-06 21:11	> 1 d	0.1302193	0.1263135	0.0013028
EARTH	2002-08-06 06:23	> 1 d	0.1849031	0.1719553	0.0043275
EARTH	2010-01-05 16:24	> 1 d	0.1725444	0.1563131	0.0054319
EARTH	2010-03-28 15:26	> 1 d	0.1267608	0.1214483	0.0017710
EARTH	2018-02-09 11:11	> 1 d	0.0629593	0.0425144	0.0068723
EARTH	2026-02-01 10:04	< 1 min	0.0161596	0.0161238	0.0000119
EARTH	2034-02-09 12:08	> 1 d	0.0622361	0.0421478	0.0067527
EARTH	2042-01-05 09:53	> 1 d	0.1741673	0.1584562	0.0052556
EARTH	2042-03-28 22:11	> 1 d	0.1258794	0.1204977	0.0017941
EARTH	2050-05-06 23:39	> 1 d	0.1276931	0.1250045	0.0008968
EARTH	2050-08-01 16:15	> 1 d	0.1814565	0.1710021	0.0034897
EARTH	2058-06-21 04:09	1272.3	0.0751012	0.0691435	0.0019860
EARTH	2066-07-04 06:28	144.5	0.0161627	0.0127715	0.0012505
EARTH	2074-05-23 13:29	705.4	0.1149241	0.1135466	0.0004592
EARTH	2081-12-26 03:49	339.8	0.1917843	0.1906027	0.0003939
EARTH	2082-04-04 18:45	415.7	0.1326014	0.1321186	0.0001611
EARTH	2090-02-05 21:58	409.8	0.0574833	0.0536323	0.0012867
EARTH	2098-01-27 16:40	76.3	0.0296017	0.0279619	0.0005487
EARTH	2107-07-14 04:57	172.9	0.1078257	0.0955752	0.0040848
EARTH	2115-06-10 14:46	> 1 d	0.0952593	0.0837965	0.0038210
EARTH	2123-03-14 23:19	> 1 d	0.1157455	0.1107160	0.0016772

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
70.50848536	183.57771112	0.00974342	MINIMUM
298.63055841	29.55549507	0.01389550	MINIMUM
5.12544235	107.08966056	0.13628571	SADDLE
183.56911697	285.56817944	0.31613940	SADDLE
5.32566585	287.34686490	1.87286351	SADDLE
183.66338955	105.65204884	2.31169042	MAXIMUM

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MOID Plots

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