Asteroids

443880 2001UZ16 help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

1.009

Aphelion (Q)

2.511

Eccentricity (e)

0.427

Inclination (i)

12.7

deg

Orbit period (P)

852.9

Earth MOID

0.02922

U parameter

0.0

A₂

-52.4

10^-15au/days²

Next Earth close approach

Date

2029-09-19

Nominal distance (from Earth center)

0.16577

24799545

Maximum Brightness

18.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

19.4

mag

Diameter

200

Taxonomic type

Rotation period (T)

13.72

Discovery Information

Discovery Date

2001-10-25

Observatory

Lincoln Laboratory ETS, New Mexico

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

1.760041

1-sigma variation

3.849E-9

Unit

Eccentricity (e)

Value

0.426543

1-sigma variation

1.863E-8

Unit

Inclination (i)

Value

12.6734

1-sigma variation

5.297E-6

Unit

Long. of Ascending Node (Ω)

Value

323.0908

1-sigma variation

1.496E-5

Unit

Arg. of Perihelion (ω)

Value

28.6322

1-sigma variation

2.321E-5

Unit

Mean Anomaly (M)

Value

128.93615

1-sigma variation

0.00001

Unit

Perihelion distance

Value

1.009307

1-sigma variation

Unit

Aphelion distance

Value

2.510775

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.033968

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.313716

1-sigma variation

Unit

MOID

Value

0.029220

1-sigma variation

Unit

Orbit Period

Value

852.8694

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

A₂

Value

-52.40243

1-sigma variation

9.37813

Unit

10^-15au/days²

Covariance Matrix

	a	e	i	Ω	ω	M	A₂
a	1.48121E-17	1.51012E-17	-5.66572E-15	-2.98949E-14	3.89022E-14	-1.28807E-14	3.43987E-8
e	1.51012E-17	3.46919E-16	5.43867E-15	-1.92602E-14	1.84758E-14	-6.64377E-15	4.67400E-8
i	-5.66572E-15	5.43867E-15	2.80620E-11	6.93617E-11	-8.51292E-11	9.56984E-12	-1.04347E-5
Ω	-2.98949E-14	-1.92602E-14	6.93617E-11	2.23812E-10	-2.55630E-10	2.88165E-11	-6.23040E-5
ω	3.89022E-14	1.84758E-14	-8.51292E-11	-2.55630E-10	5.38672E-10	-1.28599E-10	9.26789E-5
M	-1.28807E-14	-6.64377E-15	9.56984E-12	2.88165E-11	-1.28599E-10	4.64619E-11	-3.12806E-5
A₂	3.43987E-8	4.67400E-8	-1.04347E-5	-6.23040E-5	9.26789E-5	-3.12806E-5	8.79493E1

Date of computation: 2025-09-10 00:30 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

13.72

Unit

Source

[2]

Quality

Value

Unit

Source

[2]

Amplitude

Value

0.97

Unit

mag

Source

[2]

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

[1]

Taxonomy (all)

Value

Unit

Source

[1]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

19.439

Unit

mag

Source

[3]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[3]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.5

Unit

Source

[4]

Diameter

Value

200

Unit

Source

[4]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Radar R

Unit

Source

[5]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Ieva, S. et al. (2018) Astron. Astrophys. 615, A127. (Photometric survey of 67 near-Earth objects)
[2]	EARN	1.) Warner, B.D. (2016) MPB 43, 66-79. (NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT CS3-PALMER DIVIDE STATION: 2015 JUNE-SEPTEMBER)(36 NEAs)
[3]	ESA Aegis	ESA orbit determination and impact monitoring system
[4]	EARN	1.) Nugent, C.R. et al. (2016) Astron. J. 152_63 (12pp) (NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos) (207 NEOs)
[5]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

7690

Unit

Source

[1]

Unobserved

Value

1068

Unit

Source

[1]

Normalized RMS of residuals

Value

0.458639

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2001-10-25.07853

Unit

Source

[2]

Last Observation

Value

2022-11-14.369257

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

449 (5)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

2015-09-13

Unit

Source

[3]

Last Observation

Value

2015-09-13

Unit

Source

[3]

Delay (Discarded)

Value

2 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

1 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

3 (0)

Unit

Source

[1]

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
[3]	JPL Radar Observations	Jet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt

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 443880 2001UZ16 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	2001-09-26 17:21	< 1 min	0.1957862	0.1957857	0.0000002
EARTH	2008-09-16 04:11	< 1 min	0.1523094	0.1523092	0.0000001
EARTH	2015-09-11 13:53	< 1 s	0.1296366	0.1296365	0.0000000
EARTH	2022-09-12 17:04	< 1 min	0.1354312	0.1354310	0.0000001
EARTH	2029-09-19 18:09	< 1 min	0.1657747	0.1657742	0.0000002

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
344.09513774	225.20967029	0.03080118	MINIMUM
180.92169373	69.13874035	1.52586676	SADDLE
359.40599580	68.85028751	2.00103075	SADDLE
178.58163433	247.67417819	3.51265808	MAXIMUM

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MOID Plots

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