Asteroids

2026RZ1 help

Last update: 2026-09-16 13:00 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.928

Aphelion (Q)

1.774

Eccentricity (e)

0.313

Inclination (i)

10.3

deg

Orbit period (P)

573.7

Earth MOID

0.01722

U parameter

7.7

Next Earth close approach

Date

2026-09-22

Nominal distance (from Earth center)

0.02665

3987312

Maximum Brightness

19.1

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

2026-09-05

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.351222

1-sigma variation

0.000778

Unit

Eccentricity (e)

Value

0.313049

1-sigma variation

0.000430

Unit

Inclination (i)

Value

10.3032

1-sigma variation

0.0114

Unit

Long. of Ascending Node (Ω)

Value

176.9712

1-sigma variation

0.0012

Unit

Arg. of Perihelion (ω)

Value

234.2674

1-sigma variation

0.0092

Unit

Mean Anomaly (M)

Value

266.84048

1-sigma variation

0.09070

Unit

Perihelion distance

Value

0.928224

1-sigma variation

Unit

Aphelion distance

Value

1.774221

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.496637

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.025465

1-sigma variation

Unit

MOID

Value

0.017215

1-sigma variation

Unit

Orbit Period

Value

573.7050

1-sigma variation

Unit

U parameter

Value

7.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.05286E-7	3.34669E-7	8.87573E-6	9.06100E-7	-7.14606E-6	7.05641E-5
e	3.34669E-7	1.85055E-7	4.90796E-6	5.00644E-7	-3.94752E-6	3.90145E-5
i	8.87573E-6	4.90796E-6	1.30169E-4	1.32734E-5	-1.04652E-4	1.03469E-3
Ω	9.06100E-7	5.00644E-7	1.32734E-5	1.36665E-6	-1.07972E-5	1.05664E-4
ω	-7.14606E-6	-3.94752E-6	-1.04652E-4	-1.07972E-5	8.53981E-5	-8.33414E-4
M	7.05641E-5	3.90145E-5	1.03469E-3	1.05664E-4	-8.33414E-4	8.22646E-3

Date of computation: 2026-09-16 13:00 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

24.888

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

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

Unit

Source

[1]

Normalized RMS of residuals

Value

0.426183

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-09-05.366758

Unit

Source

[2]

Last Observation

Value

2026-09-15.908507

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

30 (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

Filters

Initial Date: *

Final Date: *

Normalised Only accepted

Max residual (arcsec):

* - these fields are required

Plot

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 2026RZ1 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	1957-09-22 22:53	> 1 mo	0.0182964	0.0161410	0.6314525
EARTH	1968-09-10 08:59	> 1 mo	0.1719575	0.0048874	1.6297194
EARTH	1994-01-03 13:16	> 1 mo	0.1804026	0.1773620	0.1742041
EARTH	2004-10-21 09:35	> 1 mo	0.1305614	0.0426639	0.4191890
EARTH	2015-09-25 15:43	> 1 d	0.0200843	0.0173380	0.0284937
EARTH	2026-09-22 08:30	< 1 min	0.0266535	0.0265566	0.0000323
EARTH	2052-01-10 08:57	> 1 d	0.1958813	0.1751941	0.0550061
EARTH	2062-10-24 05:34	> 1 mo	0.1351978	0.0490587	0.1145784
EARTH	2073-09-21 00:48	> 1 w	0.0387143	0.0175209	0.1551247
EARTH	2098-10-13 05:32	> 1 mo	0.1086056	0.0118495	0.6519874
EARTH	2109-09-12 13:37	> 1 mo	0.1700647	0.0080531	0.9132337
EARTH	2124-01-09 19:18	> 1 mo	0.1815919	0.1743737	0.2146111

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
322.48886707	257.39326875	0.01721534	MINIMUM
30.85119436	348.88100748	0.17607376	MINIMUM
29.21402722	346.75049412	0.17607639	SADDLE
182.14233501	127.51695433	0.78902070	SADDLE
358.84434637	125.64289140	1.93308847	SADDLE
177.68595128	304.26800612	2.75807031	MAXIMUM

Download:

MOID Plots

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