Asteroids

2026JJ3 help

Last update: 2026-05-17 13:15 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Aten

Perihelion (q)

0.783

Aphelion (Q)

1.035

Eccentricity (e)

0.139

Inclination (i)

3.5

deg

Orbit period (P)

316.5

Earth MOID

0.02095

U parameter

6.5

Next Earth close approach

Date

2039-05-15

Nominal distance (from Earth center)

0.02218

3318043

Maximum Brightness

19.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

11 - 24*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-05-13

Observatory

JPL SynTrack Robotic Telescope, Auberry

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

0.908840

1-sigma variation

0.000051

Unit

Eccentricity (e)

Value

0.138975

1-sigma variation

0.000083

Unit

Inclination (i)

Value

3.5188

1-sigma variation

0.0025

Unit

Long. of Ascending Node (Ω)

Value

227.7312

1-sigma variation

0.0004

Unit

Arg. of Perihelion (ω)

Value

175.7890

1-sigma variation

0.0033

Unit

Mean Anomaly (M)

Value

221.28089

1-sigma variation

0.00778

Unit

Perihelion distance

Value

0.782534

1-sigma variation

Unit

Aphelion distance

Value

1.035147

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.025529

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.208007

1-sigma variation

Unit

MOID

Value

0.020947

1-sigma variation

Unit

Orbit Period

Value

316.4680

1-sigma variation

Unit

U parameter

Value

6.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.64212E-9	-4.27616E-9	-1.30852E-7	-2.20228E-8	1.68218E-7	-3.98874E-7
e	-4.27616E-9	6.92087E-9	2.11781E-7	3.56428E-8	-2.72351E-7	6.45689E-7
i	-1.30852E-7	2.11781E-7	6.48079E-6	1.09083E-6	-8.33320E-6	1.97570E-5
Ω	-2.20228E-8	3.56428E-8	1.09083E-6	1.83775E-7	-1.40184E-6	3.32405E-6
ω	1.68218E-7	-2.72351E-7	-8.33320E-6	-1.40184E-6	1.08556E-5	-2.55875E-5
M	-3.98874E-7	6.45689E-7	1.97570E-5	3.32405E-6	-2.55875E-5	6.04708E-5

Date of computation: 2026-05-17 13:15 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

26.953

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

11 - 24*

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

0.589769

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-05-08.47039

Unit

Source

[2]

Last Observation

Value

2026-05-17.270276

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

55 (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 2026JJ3 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	1961-03-27 19:40	> 1 w	0.0490788	0.0403368	0.0265349
EARTH	1961-08-08 15:06	> 1 mo	0.1525266	0.0791681	0.0259132
EARTH	1967-11-27 20:58	> 1 w	0.1973247	0.1855034	0.0045563
EARTH	1974-03-21 06:58	143.1	0.1255834	0.0472668	0.0801687
EARTH	1974-09-10 15:01	> 1 mo	0.1861827	0.1485512	0.0201606
EARTH	1980-12-27 00:48	> 1 mo	0.1701760	0.1370907	0.0352319
EARTH	1981-06-07 19:00	> 1 d	0.0792374	0.0262131	0.1066764
EARTH	1994-01-13 04:33	> 1 mo	0.1525445	0.1165022	0.0151783
EARTH	1994-06-04 01:58	> 1 d	0.0369478	0.0227579	0.0254796
EARTH	2000-03-23 04:15	529.0	0.1741320	0.0827560	0.0317758
EARTH	2000-09-21 10:49	> 1 w	0.1982213	0.1828174	0.0059253
EARTH	2013-04-10 13:28	> 1 d	0.0347075	0.0332674	0.0015139
EARTH	2026-05-12 23:22	< 1 min	0.0240141	0.0239674	0.0000156
EARTH	2039-05-15 01:28	> 1 d	0.0221797	0.0210850	0.0012795
EARTH	2052-04-19 23:21	> 1 w	0.0321264	0.0310813	0.0050858
EARTH	2065-03-20 04:34	> 1 d	0.0723566	0.0425924	0.0760347
EARTH	2065-08-20 22:19	> 1 mo	0.1670724	0.0975762	0.0348054
EARTH	2071-12-15 06:35	> 1 mo	0.1794439	0.1640613	0.0071273
EARTH	2072-06-05 00:14	68.3	0.1172031	0.0406375	0.0275420
EARTH	2085-05-12 10:39	> 1 mo	0.0224319	0.0212986	0.0240723
EARTH	2098-03-17 11:13	> 1 d	0.1144369	0.0436162	0.5895630
EARTH	2098-09-03 20:06	> 1 mo	0.1817298	0.1351292	0.1585571
EARTH	2104-12-30 13:09	> 1 mo	0.1618396	0.1260564	0.1759064
EARTH	2105-06-03 16:41	> 1 mo	0.0610976	0.0257024	0.4260780
EARTH	2118-05-19 18:17	> 1 mo	0.0204592	0.0204270	0.0434624

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
200.94280795	136.70660313	0.02094713	MINIMUM
349.84998939	288.62996907	0.21090053	SADDLE
351.60752778	110.64336918	1.78961323	SADDLE
174.11225484	293.17200650	2.02784413	MAXIMUM

Download:

MOID Plots

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