Asteroids

469737 2005NW44 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.403

Aphelion (Q)

1.156

Eccentricity (e)

0.483

Inclination (i)

6.1

deg

Orbit period (P)

251.2

Earth MOID

0.05337

U parameter

0.0

Next Earth close approach

Date

2027-07-23

Nominal distance (from Earth center)

0.13795

20636465

Maximum Brightness

16.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

20.4

mag

Diameter

220 - 500*

Taxonomic type

Scomp

Rotation period (T)

31.5

Discovery Information

Discovery Date

2005-07-10

Observatory

Catalina Sky Survey

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

0.779235

1-sigma variation

4.557E-10

Unit

Eccentricity (e)

Value

0.483383

1-sigma variation

3.515E-8

Unit

Inclination (i)

Value

6.0717

1-sigma variation

4.827E-6

Unit

Long. of Ascending Node (Ω)

Value

114.2876

1-sigma variation

1.556E-5

Unit

Arg. of Perihelion (ω)

Value

0.9324

1-sigma variation

1.571E-5

Unit

Mean Anomaly (M)

Value

37.50336

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.402566

1-sigma variation

Unit

Aphelion distance

Value

1.155904

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.581385

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.138046

1-sigma variation

Unit

MOID

Value

0.053373

1-sigma variation

Unit

Orbit Period

Value

251.2470

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.07638E-19	-1.20019E-17	6.51241E-16	-1.52789E-15	1.06989E-15	6.80121E-16
e	-1.20019E-17	1.23537E-15	2.61674E-14	-2.04363E-14	6.15128E-14	-1.58551E-13
i	6.51241E-16	2.61674E-14	2.32964E-11	-4.89232E-11	4.91027E-11	-1.13382E-11
Ω	-1.52789E-15	-2.04363E-14	-4.89232E-11	2.42071E-10	-2.42476E-10	1.60698E-11
ω	1.06989E-15	6.15128E-14	4.91027E-11	-2.42476E-10	2.46835E-10	-2.52341E-11
M	6.80121E-16	-1.58551E-13	-1.13382E-11	1.60698E-11	-2.52341E-11	3.79578E-11

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

31.5

Unit

Source

[3]

Quality

Value

Unit

Source

[3]

Amplitude

Value

0.13

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

Scomp

Unit

Source

[1]

Taxonomy (all)

Value

Unit

Source

[2]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

20.378

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

220 - 500*

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.) Michaël Marsset et al 2022 AJ 163 165
[2]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[3]	EARN	1.) Warner, B.D. (2018) MPB 45, 366-379. (Near-Earth Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2018 April-June)(39 NEAs)
[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

7331

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.545416

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2005-07-10.34696

Unit

Source

[2]

Last Observation

Value

2025-08-05.587385

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

424 (3)

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

Close Approaches for 469737 2005NW44 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	1950-08-19 18:18	< 1 s	0.0872667	0.0872658	0.0000003
EARTH	1952-07-14 23:58	< 1 min	0.1390615	0.1390613	0.0000000
EARTH	1954-06-15 15:08	< 1 s	0.1136825	0.1136815	0.0000003
EARTH	1961-08-19 04:31	< 1 s	0.0598973	0.0598969	0.0000001
EARTH	1963-07-08 19:06	< 1 min	0.1326774	0.1326772	0.0000001
EARTH	1965-06-16 07:22	< 1 s	0.1554188	0.1554181	0.0000002
VENUS	1965-11-09 23:03	< 1 s	0.0397030	0.0397023	0.0000002
EARTH	1972-08-17 22:54	< 1 s	0.0563467	0.0563465	0.0000001
EARTH	1974-07-04 03:13	< 1 min	0.1244663	0.1244661	0.0000001
EARTH	1976-06-16 20:27	< 1 s	0.1815234	0.1815230	0.0000001
VENUS	1977-07-20 06:30	< 1 s	0.0306836	0.0306835	0.0000001
EARTH	1983-08-16 20:18	< 1 s	0.0662158	0.0662156	0.0000001
EARTH	1985-06-28 21:21	< 1 min	0.1114392	0.1114390	0.0000001
EARTH	1994-08-11 21:31	< 1 s	0.0911852	0.0911851	0.0000001
EARTH	1996-06-22 01:10	< 1 s	0.0856249	0.0856247	0.0000001
EARTH	2005-08-04 11:50	< 1 s	0.1164535	0.1164533	0.0000000
EARTH	2007-06-18 07:23	< 1 s	0.0598149	0.0598148	0.0000000
VENUS	2014-03-23 11:17	< 1 s	0.0492925	0.0492923	0.0000001
EARTH	2014-08-18 13:38	< 1 s	0.1674053	0.1674050	0.0000001
EARTH	2016-07-28 22:59	< 1 s	0.1304319	0.1304317	0.0000000
EARTH	2018-06-16 06:50	< 1 s	0.0548730	0.0548729	0.0000000
EARTH	2025-08-19 06:38	< 1 s	0.1296989	0.1296987	0.0000001
EARTH	2027-07-23 14:37	< 1 s	0.1379462	0.1379462	0.0000000
EARTH	2029-06-15 10:32	< 1 s	0.0734276	0.0734274	0.0000000
VENUS	2029-11-03 10:58	< 1 s	0.0312963	0.0312961	0.0000001
EARTH	2036-08-19 16:01	< 1 s	0.0892383	0.0892380	0.0000001
EARTH	2038-07-16 03:23	< 1 min	0.1392921	0.1392920	0.0000000
EARTH	2040-06-15 12:04	< 1 s	0.1097080	0.1097076	0.0000001
EARTH	2047-08-19 22:22	< 1 s	0.0601637	0.0601635	0.0000001
EARTH	2049-07-07 10:03	< 1 min	0.1307564	0.1307563	0.0000000
EARTH	2051-06-17 09:13	< 1 s	0.1620696	0.1620691	0.0000002
EARTH	2058-08-17 08:33	< 1 min	0.0652903	0.0652899	0.0000001
EARTH	2060-06-29 15:04	< 1 min	0.1130377	0.1130375	0.0000001
VENUS	2066-07-08 08:28	< 1 s	0.0496141	0.0496139	0.0000001
EARTH	2069-08-12 16:45	< 1 min	0.0890653	0.0890649	0.0000001
VENUS	2070-06-10 13:26	< 1 s	0.0497086	0.0497079	0.0000002
EARTH	2071-06-23 23:09	< 1 min	0.0883984	0.0883981	0.0000001
EARTH	2080-08-07 09:03	< 1 min	0.1089460	0.1089457	0.0000001
VENUS	2082-02-18 10:38	< 1 s	0.0326630	0.0326626	0.0000001
EARTH	2082-06-19 17:30	< 1 s	0.0664497	0.0664495	0.0000001
EARTH	2089-08-18 06:19	< 1 s	0.1823954	0.1823945	0.0000003
EARTH	2091-08-01 01:46	< 1 min	0.1273074	0.1273070	0.0000001
EARTH	2093-06-16 18:13	< 1 s	0.0517007	0.0517006	0.0000000
EARTH	2100-08-20 10:14	< 1 s	0.1276987	0.1276976	0.0000004
EARTH	2102-07-23 19:34	< 1 min	0.1387722	0.1387720	0.0000001
EARTH	2104-06-16 10:55	< 1 s	0.0754674	0.0754666	0.0000003
EARTH	2111-08-21 16:56	< 1 s	0.0780179	0.0780171	0.0000003
EARTH	2113-07-14 06:31	< 1 min	0.1374764	0.1374763	0.0000000
EARTH	2115-06-17 18:43	< 1 s	0.1245526	0.1245515	0.0000004
EARTH	2122-08-20 13:47	< 1 min	0.0600367	0.0600365	0.0000001
VENUS	2122-09-27 06:07	< 1 min	0.0316574	0.0316573	0.0000001
EARTH	2124-07-06 07:02	< 1 min	0.1263091	0.1263088	0.0000001

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
130.90137242	162.65796030	0.05375757	MINIMUM
229.80915518	224.11943406	0.05738820	MINIMUM
180.52975906	193.46695351	0.14011131	SADDLE
1.11295782	14.27540571	0.58138506	SADDLE
1.08439622	194.21169770	1.41855503	SADDLE
180.32053251	13.33640776	2.14002631	MAXIMUM

Download:

MOID Plots

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