Asteroids

2013NJ help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.921

Aphelion (Q)

1.651

Eccentricity (e)

0.284

Inclination (i)

3.9

deg

Orbit period (P)

532.7

Earth MOID

0.00656

U parameter

0.3

Next Earth close approach

Date

2032-09-02

Nominal distance (from Earth center)

0.08042

12030944

Maximum Brightness

20.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

110 - 240*

Taxonomic type

Rotation period (T)

2.020

Discovery Information

Discovery Date

2013-07-01

Observatory

Pan-STARRS 1, 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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.286056

1-sigma variation

7.908E-9

Unit

Eccentricity (e)

Value

0.283521

1-sigma variation

1.082E-8

Unit

Inclination (i)

Value

3.9416

1-sigma variation

2.250E-6

Unit

Long. of Ascending Node (Ω)

Value

238.5466

1-sigma variation

4.544E-6

Unit

Arg. of Perihelion (ω)

Value

140.4005

1-sigma variation

3.073E-6

Unit

Mean Anomaly (M)

Value

103.50332

1-sigma variation

0.00003

Unit

Perihelion distance

Value

0.921432

1-sigma variation

Unit

Aphelion distance

Value

1.650679

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.499573

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.017260

1-sigma variation

Unit

MOID

Value

0.006556

1-sigma variation

Unit

Orbit Period

Value

532.7067

1-sigma variation

Unit

U parameter

Value

0.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.25349E-17	2.23646E-17	-1.29859E-15	-1.50389E-15	7.82729E-15	-2.25670E-13
e	2.23646E-17	1.17140E-16	-1.58916E-14	-3.33933E-14	4.46108E-15	-6.68735E-14
i	-1.29859E-15	-1.58916E-14	5.06292E-12	7.11194E-12	-2.49309E-13	1.29956E-12
Ω	-1.50389E-15	-3.33933E-14	7.11194E-12	2.06457E-11	-9.09219E-12	5.11290E-13
ω	7.82729E-15	4.46108E-15	-2.49309E-13	-9.09219E-12	9.44624E-12	-2.85787E-11
M	-2.25670E-13	-6.68735E-14	1.29956E-12	5.11290E-13	-2.85787E-11	8.16877E-10

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

2.020

Unit

Source

[3]

Quality

Value

Unit

Source

[3]

Amplitude

Value

0.07

Unit

mag

Source

[3]

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

[2]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

21.977

Unit

mag

Source

[4]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[4]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[5]

Diameter

Value

110 - 240*

Unit

Source

[5]

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

[6]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Alexey V. Sergeyev and Benoit Carry A&A, 652 (2021) A59
[2]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[3]	EARN	1.) Thirouin, A.; Moskovitz, N.; Binzel, R.P.; Christensen, E.; et al. (2016) Astron. J. 152, A163.
[4]	ESA Aegis	ESA orbit determination and impact monitoring system
[5]	Estimation	Estimated from absolute magnitude
[6]	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

1345

Unit

Source

[1]

Unobserved

Value

3122

Unit

Source

[1]

Normalized RMS of residuals

Value

0.407905

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2013-07-01.31627

Unit

Source

[2]

Last Observation

Value

2017-03-07.12979

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

245 (6)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2013-11-30

Unit

Source

[3]

Last Observation

Value

2013-12-16

Unit

Source

[3]

Delay (Discarded)

Value

5 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

4 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

9 (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 2013NJ 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	1956-11-24 20:35	15.8	0.0067689	0.0066716	0.0000330
EARTH	1959-08-04 19:57	5.1	0.1655392	0.1653735	0.0000552
EARTH	1978-09-06 20:31	18.6	0.0847389	0.0847127	0.0000088
EARTH	1997-11-24 22:14	< 1 min	0.0084812	0.0084773	0.0000013
EARTH	2013-11-26 03:07	< 1 s	0.0063384	0.0063384	0.0000000
EARTH	2032-09-02 17:22	< 1 min	0.0804219	0.0804209	0.0000003
MARS	2048-05-06 04:47	< 1 min	0.0458823	0.0458778	0.0000015
EARTH	2048-12-02 04:04	< 1 min	0.0471313	0.0471250	0.0000021
EARTH	2051-08-05 10:42	< 1 s	0.1466626	0.1466618	0.0000003
EARTH	2067-11-26 22:58	2.3	0.0071927	0.0071903	0.0000008
EARTH	2070-08-04 11:44	28.8	0.1548981	0.1540861	0.0002708
EARTH	2086-12-12 20:34	131.3	0.1746848	0.1692187	0.0018222
EARTH	2089-08-25 06:18	659.8	0.0695744	0.0683654	0.0004533
EARTH	2108-10-26 06:32	> 1 d	0.0779285	0.0724554	0.0018527

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
34.24893239	322.10111945	0.00655176	MINIMUM
319.18360645	224.41924813	0.06942211	MINIMUM
350.36936441	264.92241338	0.09140600	SADDLE
177.39237213	94.26675189	0.65174275	SADDLE
356.32744188	92.88389504	1.92219593	SADDLE
178.26321494	274.91949629	2.64818068	MAXIMUM

Download:

MOID Plots

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