Asteroids

2025NN1 help

Last update: 2025-07-09 20:00 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.873

Aphelion (Q)

1.889

Eccentricity (e)

0.368

Inclination (i)

2.8

deg

Orbit period (P)

592.9

Earth MOID

0.00026

U parameter

8.3

Next Earth close approach

Date

2028-08-21

Nominal distance (from Earth center)

0.1493

22335536

Maximum Brightness

36.1

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

30.2

mag

Diameter

2.4 - 5*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-07-02

Observatory

Space Surveillance Telescope, HEH Station

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

1.381162

1-sigma variation

0.001806

Unit

Eccentricity (e)

Value

0.367706

1-sigma variation

0.001083

Unit

Inclination (i)

Value

2.8498

1-sigma variation

0.0069

Unit

Long. of Ascending Node (Ω)

Value

100.9391

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

241.7407

1-sigma variation

0.0110

Unit

Mean Anomaly (M)

Value

294.70023

1-sigma variation

0.14420

Unit

Perihelion distance

Value

0.873300

1-sigma variation

Unit

Aphelion distance

Value

1.889024

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.461637

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.001459

1-sigma variation

Unit

MOID

Value

0.000258

1-sigma variation

Unit

Orbit Period

Value

592.8778

1-sigma variation

Unit

U parameter

Value

8.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.26205E-6	1.95549E-6	1.24044E-5	-3.61278E-7	1.94526E-5	2.60444E-4
e	1.95549E-6	1.17232E-6	7.43666E-6	-2.16596E-7	1.16798E-5	1.56122E-4
i	1.24044E-5	7.43666E-6	4.71821E-5	-1.37418E-6	7.41434E-5	9.90321E-4
Ω	-3.61278E-7	-2.16596E-7	-1.37418E-6	4.00279E-8	-2.16027E-6	-2.88429E-5
ω	1.94526E-5	1.16798E-5	7.41434E-5	-2.16027E-6	1.20841E-4	1.55167E-3
M	2.60444E-4	1.56122E-4	9.90321E-4	-2.88429E-5	1.55167E-3	2.07945E-2

Date of computation: 2025-07-09 20:00 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

30.177

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

2.4 - 5*

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

0.2

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.281653

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-07-02.70953

Unit

Source

[2]

Last Observation

Value

2025-07-02.890516

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

5 (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 2025NN1 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	1952-07-12 20:46	> 1 w	0.0633489	0.0027988	0.0986996
EARTH	1965-06-23 15:18	> 1 d	0.1027884	0.0406996	0.0206964
EARTH	1973-11-05 19:01	> 1 w	0.0585334	0.0434973	0.0695091
EARTH	1986-10-18 14:59	> 1 mo	0.0883436	0.0436133	0.1299792
EARTH	1999-09-01 20:45	> 1 mo	0.1413129	0.1377954	0.0053223
EARTH	2012-07-19 19:31	> 1 mo	0.0847996	0.0060307	0.1130143
EARTH	2025-07-02 22:22	< 1 s	0.0010711	0.0010627	0.0000028
EARTH	2028-08-21 19:27	> 1 w	0.1493038	0.1199128	0.0100007
EARTH	2031-10-21 02:26	> 1 w	0.1123217	0.0373001	0.0522567
EARTH	2034-11-20 09:26	> 1 d	0.1075728	0.0368935	0.1126087
MOON	2066-07-03 11:18	> 1 w	0.0003615	0.0002312	0.2123097
EARTH	2066-07-03 19:24	> 1 w	0.0019957	0.0006093	0.2529054
EARTH	2077-07-08 11:12	> 1 mo	0.0374015	0.0003128	250.7406225
EARTH	2088-08-16 08:58	> 1 mo	0.1366997	0.0404582	94.5675053
EARTH	2099-09-29 23:21	> 1 mo	0.1332807	0.0489681	298.0196410
EARTH	2110-11-06 10:17	> 1 mo	0.0419112	0.0366003	538.8902390
EARTH	2121-11-15 20:08	> 1 mo	0.0957302	0.0362580	3028.0040846

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
315.91644513	178.88180287	0.00025826	MINIMUM
40.53981026	298.31910425	0.04338565	MINIMUM
358.78006037	239.54914011	0.14078416	SADDLE
179.10025175	59.37683397	0.89933257	SADDLE
357.80297778	58.08151029	1.86439117	SADDLE
178.86130027	239.20786591	2.89648530	MAXIMUM

Download:

MOID Plots

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