Asteroids

2025BU3 help

Last update: 2025-07-29 02:36 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Aten

Perihelion (q)

0.418

Aphelion (Q)

1.065

Eccentricity (e)

0.437

Inclination (i)

14.0

deg

Orbit period (P)

233.2

Earth MOID

0.00406

U parameter

7.5

Next Earth close approach

Date

2032-01-21

Nominal distance (from Earth center)

0.09272

13870756

Maximum Brightness

21.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.9

mag

Diameter

28 - 60*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-01-24

Observatory

Catalina Sky Survey

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.741435

1-sigma variation

0.000118

Unit

Eccentricity (e)

Value

0.436881

1-sigma variation

0.000421

Unit

Inclination (i)

Value

14.0353

1-sigma variation

0.0229

Unit

Long. of Ascending Node (Ω)

Value

309.7574

1-sigma variation

0.0012

Unit

Arg. of Perihelion (ω)

Value

334.8276

1-sigma variation

0.0014

Unit

Mean Anomaly (M)

Value

23.40792

1-sigma variation

0.07847

Unit

Perihelion distance

Value

0.417516

1-sigma variation

Unit

Aphelion distance

Value

1.065355

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.584450

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.006725

1-sigma variation

Unit

MOID

Value

0.004064

1-sigma variation

Unit

Orbit Period

Value

233.1892

1-sigma variation

Unit

U parameter

Value

7.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.38286E-8	-4.94953E-8	-2.69054E-6	-1.35126E-7	1.68182E-7	-9.22678E-6
e	-4.94953E-8	1.77167E-7	9.63140E-6	4.83822E-7	-6.02829E-7	3.30274E-5
i	-2.69054E-6	9.63140E-6	5.23633E-4	2.63094E-5	-3.28123E-5	1.79550E-3
Ω	-1.35126E-7	4.83822E-7	2.63094E-5	1.32285E-6	-1.65462E-6	9.01977E-5
ω	1.68182E-7	-6.02829E-7	-3.28123E-5	-1.65462E-6	2.10047E-6	-1.12403E-4
M	-9.22678E-6	3.30274E-5	1.79550E-3	9.01977E-5	-1.12403E-4	6.15696E-3

Date of computation: 2025-07-29 02:36 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

24.918

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

28 - 60*

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

215

Unit

Source

[1]

Normalized RMS of residuals

Value

0.763198

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-01-24.481102

Unit

Source

[2]

Last Observation

Value

2025-01-28.51284

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

44 (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 2025BU3 from 1950 to 2125

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1952-01-04 07:50	> 1 mo	0.1532163	0.1270637	0.2540603
MERCURY	1952-05-07 14:20	> 1 mo	0.0305114	0.0297824	0.2250525
EARTH	1958-12-20 04:37	> 1 mo	0.1852634	0.1734402	0.1341524
EARTH	1961-01-31 15:46	> 1 d	0.1027423	0.0078266	0.3910031
MERCURY	1965-02-10 22:37	> 1 w	0.0307879	0.0302635	0.0407800
EARTH	1968-01-31 01:16	948.3	0.0040208	0.0033734	0.0080660
EARTH	1975-01-05 09:01	> 1 d	0.1502513	0.1314962	0.0074910
EARTH	1977-01-30 00:40	823.6	0.1937142	0.1188115	0.0250030
EARTH	1984-01-29 02:36	> 1 d	0.0355484	0.0054948	0.0240790
MERCURY	1987-07-09 07:27	> 1 d	0.0309519	0.0290431	0.0113627
MERCURY	1989-06-08 04:52	> 1 d	0.0337138	0.0304131	0.0103353
EARTH	1990-12-26 23:32	> 1 d	0.1689977	0.1615156	0.0033837
EARTH	1993-01-31 12:35	221.7	0.1201084	0.0856766	0.0114915
EARTH	2000-01-20 01:47	488.5	0.1027011	0.0967300	0.0019971
EARTH	2006-12-16 21:51	1386.1	0.1948406	0.1797455	0.0064543
EARTH	2009-01-31 11:14	604.7	0.0303282	0.0047961	0.0197343
EARTH	2016-01-11 13:28	> 1 d	0.1345097	0.1194815	0.0052360
MERCURY	2017-08-16 11:12	> 1 d	0.0314982	0.0294390	0.0048313
MERCURY	2019-07-16 00:31	> 1 d	0.0389703	0.0341352	0.0040438
EARTH	2025-01-30 21:06	< 1 min	0.0087391	0.0087059	0.0000111
EARTH	2032-01-21 20:42	> 1 d	0.0927203	0.0757468	0.0057328
MERCURY	2034-04-01 04:22	> 1 d	0.0428139	0.0339311	0.0114988
MERCURY	2036-02-24 17:32	> 1 d	0.0486136	0.0400123	0.0094109
EARTH	2039-01-03 11:42	> 1 d	0.1528112	0.1397408	0.0051800
EARTH	2045-12-17 17:43	> 1 d	0.1901821	0.1754848	0.0085442
EARTH	2048-02-01 19:07	56.7	0.0719704	0.0077027	0.0262509
MERCURY	2048-12-06 04:48	> 1 d	0.0312208	0.0312146	0.0003418
EARTH	2055-01-28 18:44	> 1 d	0.0381276	0.0069783	0.0234002
EARTH	2062-01-12 06:41	> 1 d	0.1298356	0.1115241	0.0065111
MERCURY	2063-08-13 02:02	> 1 d	0.0377166	0.0336771	0.0073611
EARTH	2068-12-22 11:05	182.2	0.1753812	0.1751912	0.0000797
EARTH	2071-02-01 09:16	21.4	0.1187146	0.1098449	0.0029577
EARTH	2078-01-30 03:16	1261.1	0.0174606	0.0055669	0.0141153
MERCURY	2078-04-22 04:47	> 1 d	0.0370076	0.0333706	0.0086757
EARTH	2085-01-08 17:13	> 1 d	0.1396830	0.1309262	0.0030263
EARTH	2091-12-17 00:43	> 1 d	0.1972557	0.1782172	0.0124795
EARTH	2094-02-01 03:44	936.8	0.0380180	0.0065234	0.0368275
MERCURY	2096-11-07 14:50	> 1 d	0.0349455	0.0323900	0.0178748
EARTH	2101-01-21 04:08	> 1 d	0.0981676	0.0421908	0.0211842
EARTH	2107-12-28 22:20	> 1 d	0.1660972	0.1553089	0.0067818
EARTH	2110-02-01 21:09	654.6	0.1461690	0.0651055	0.0271531
MERCURY	2113-06-23 12:15	> 1 d	0.0322350	0.0313319	0.0069491
EARTH	2117-01-30 20:04	1410.6	0.0197548	0.0062103	0.0148175
EARTH	2124-01-07 06:25	> 1 d	0.1476718	0.1267307	0.0081547

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
220.43815913	27.85435698	0.00406357	MINIMUM
354.86792611	174.74419338	0.60376503	SADDLE
357.95128565	359.79124997	1.39939894	SADDLE
181.17132078	183.67303391	2.07893033	MAXIMUM

Download:

MOID Plots

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