Asteroids

242191 2003NZ6 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.403

Aphelion (Q)

1.184

Eccentricity (e)

0.492

Inclination (i)

18.2

deg

Orbit period (P)

258.1

Earth MOID

0.06659

U parameter

0.5

A₂

26.6

10^-15au/days²

Next Earth close approach

Date

2027-07-17

Nominal distance (from Earth center)

0.14199

21240764

Maximum Brightness

17.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

370

Taxonomic type

Rotation period (T)

13.53

Discovery Information

Discovery Date

2003-07-09

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

0.793410

1-sigma variation

3.379E-9

Unit

Eccentricity (e)

Value

0.492336

1-sigma variation

3.936E-8

Unit

Inclination (i)

Value

18.2471

1-sigma variation

7.014E-6

Unit

Long. of Ascending Node (Ω)

Value

124.5790

1-sigma variation

1.110E-5

Unit

Arg. of Perihelion (ω)

Value

311.6294

1-sigma variation

1.144E-5

Unit

Mean Anomaly (M)

Value

131.91069

1-sigma variation

0.00002

Unit

Perihelion distance

Value

0.402786

1-sigma variation

Unit

Aphelion distance

Value

1.184035

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.531972

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.123407

1-sigma variation

Unit

MOID

Value

0.066589

1-sigma variation

Unit

Orbit Period

Value

258.1341

1-sigma variation

Unit

U parameter

Value

0.5

1-sigma variation

Unit

A₂

Value

26.60058

1-sigma variation

3.53662

Unit

10^-15au/days²

Covariance Matrix

	a	e	i	Ω	ω	M	A₂
a	1.14189E-17	4.80281E-17	8.50054E-16	4.72875E-15	-6.41593E-15	-6.61414E-14	1.18739E-8
e	4.80281E-17	1.54935E-15	9.45900E-15	-2.76032E-14	4.57000E-14	-1.77305E-13	4.78003E-8
i	8.50054E-16	9.45900E-15	4.91895E-11	-5.65614E-11	5.33680E-11	-1.35193E-11	1.13556E-6
Ω	4.72875E-15	-2.76032E-14	-5.65614E-11	1.23166E-10	-1.21298E-10	8.00557E-12	5.64563E-6
ω	-6.41593E-15	4.57000E-14	5.33680E-11	-1.21298E-10	1.30907E-10	-2.44674E-11	-7.91195E-6
M	-6.61414E-14	-1.77305E-13	-1.35193E-11	8.00557E-12	-2.44674E-11	4.86463E-10	-6.68256E-5
A₂	1.18739E-8	4.78003E-8	1.13556E-6	5.64563E-6	-7.91195E-6	-6.68256E-5	1.25077E1

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

13.53

Unit

Source

[1]

Quality

Value

Unit

Source

[1]

Amplitude

Value

1.19

Unit

mag

Source

[1]

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

18.967

Unit

mag

Source

[2]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[2]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.334

Unit

Source

[3]

Diameter

Value

370

Unit

Source

[3]

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

[4]

Download this part as:

Sources

No.	Name	Additional
[1]	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) 2.) Polishook, D. et al. (2005) ACM2005-Abstr, p. 60-61. (photometry of Atens) ((86450) 2000 CK33, (86667)2000 FO10, (85989) 1999JD6,2002CQ11 )
[2]	ESA Aegis	ESA orbit determination and impact monitoring system
[3]	EARN	1.) Mainzer, A. et al. (2011) ApJ 743, 156. (NEOWISE Observations of Near-Earth Objects: Preliminary Results) (albedo and diameters of 428 NEOs) 2.) Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; et al. (2011) Astrophys. J. 741, A90. See also Grav 2012b and Masiero 2012.
[4]	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

7996

Unit

Source

[1]

Unobserved

Value

136

Unit

Source

[1]

Normalized RMS of residuals

Value

0.397916

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2003-07-09.32246

Unit

Source

[2]

Last Observation

Value

2025-05-30.598705

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

643 (1)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2015-07-21

Unit

Source

[3]

Last Observation

Value

2015-07-22

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 242191 2003NZ6 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	1950-07-18 03:14	< 1 min	0.0749998	0.0749945	0.0000018
EARTH	1962-07-18 02:48	< 1 min	0.1185730	0.1185653	0.0000026
EARTH	1974-07-14 22:12	< 1 min	0.1814852	0.1814810	0.0000014
VENUS	1977-06-23 23:17	< 1 min	0.0401295	0.0401274	0.0000007
EARTH	1979-07-14 11:33	< 1 min	0.1421770	0.1421738	0.0000011
EARTH	1991-07-16 13:18	< 1 min	0.0911137	0.0911128	0.0000003
VENUS	1996-07-20 13:11	< 1 s	0.0408191	0.0408188	0.0000001
EARTH	2003-07-17 23:27	< 1 s	0.0665327	0.0665325	0.0000000
EARTH	2015-07-18 17:53	< 1 s	0.0833297	0.0833297	0.0000000
EARTH	2027-07-17 19:13	< 1 s	0.1419857	0.1419850	0.0000003
EARTH	2032-07-12 07:49	< 1 min	0.1830915	0.1830900	0.0000005
EARTH	2044-07-14 23:52	< 1 min	0.1158416	0.1158389	0.0000009
VENUS	2048-11-03 15:51	< 1 min	0.0380915	0.0380912	0.0000001
EARTH	2056-07-16 22:07	< 1 min	0.0712227	0.0712194	0.0000011
EARTH	2068-07-18 00:00	< 1 min	0.0708950	0.0708886	0.0000021
EARTH	2080-07-17 19:39	< 1 min	0.1216196	0.1215982	0.0000071
EARTH	2092-07-14 08:11	< 1 min	0.1843825	0.1843588	0.0000079
EARTH	2097-07-14 20:34	< 1 min	0.1310388	0.1310139	0.0000083
VENUS	2101-02-19 01:42	< 1 min	0.0391141	0.0391128	0.0000004
EARTH	2109-07-18 01:17	< 1 min	0.0764192	0.0763956	0.0000079
EARTH	2121-07-19 07:39	< 1 min	0.0667017	0.0666834	0.0000061

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
241.53298902	192.98489406	0.06554583	MINIMUM
114.09782096	111.60342064	0.31496492	MINIMUM
154.58867991	139.64172841	0.33257498	SADDLE
349.82455795	319.28629162	0.60707940	SADDLE
354.25097009	146.80769147	1.40778138	SADDLE
181.78146307	336.16924692	2.15435401	MAXIMUM

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MOID Plots

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