Asteroids

2008NA help

Last update: 2025-07-15 13:13 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Aten

Perihelion (q)

0.672

Aphelion (Q)

1.253

Eccentricity (e)

0.302

Inclination (i)

10.0

deg

Orbit period (P)

344.9

Earth MOID

0.02696

U parameter

2.2

Next Earth close approach

Date

2042-07-03

Nominal distance (from Earth center)

0.11742

17566437

Maximum Brightness

21.2

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

23.7

mag

Diameter

50 - 110*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2008-07-01

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.962505

1-sigma variation

8.421E-8

Unit

Eccentricity (e)

Value

0.302026

1-sigma variation

0.000001

Unit

Inclination (i)

Value

10.0152

1-sigma variation

0.0001

Unit

Long. of Ascending Node (Ω)

Value

104.7943

1-sigma variation

1.986E-5

Unit

Arg. of Perihelion (ω)

Value

52.5333

1-sigma variation

3.229E-5

Unit

Mean Anomaly (M)

Value

33.28149

1-sigma variation

0.00015

Unit

Perihelion distance

Value

0.671803

1-sigma variation

Unit

Aphelion distance

Value

1.253206

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.244640

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.055143

1-sigma variation

Unit

MOID

Value

0.026957

1-sigma variation

Unit

Orbit Period

Value

344.9076

1-sigma variation

Unit

U parameter

Value

2.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	7.09103E-15	8.77414E-14	-3.52307E-12	1.15215E-14	1.87338E-12	-1.30003E-11
e	8.77414E-14	1.09047E-12	-4.42822E-11	1.08863E-12	2.17966E-11	-1.60372E-10
i	-3.52307E-12	-4.42822E-11	2.80514E-9	-5.62334E-10	-3.94010E-10	6.51018E-9
Ω	1.15215E-14	1.08863E-12	-5.62334E-10	3.94427E-10	-4.40385E-10	1.96640E-11
ω	1.87338E-12	2.17966E-11	-3.94010E-10	-4.40385E-10	1.04240E-9	-3.53507E-9
M	-1.30003E-11	-1.60372E-10	6.51018E-9	1.96640E-11	-3.53507E-9	2.39019E-8

Date of computation: 2025-07-15 13:13 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

23.741

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

50 - 110*

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

[-]

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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

6208

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.651294

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2008-07-01.28784

Unit

Source

[2]

Last Observation

Value

2025-06-30.26589

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

118 (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

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 2008NA 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	1953-07-01 17:08	27.1	0.1341607	0.1325654	0.0005319
EARTH	1954-07-12 23:30	130.1	0.1737290	0.1726808	0.0003495
EARTH	1956-12-03 01:09	81.3	0.1702462	0.1698202	0.0001425
VENUS	1961-10-01 02:31	31.6	0.0141530	0.0138480	0.0001022
EARTH	1971-07-03 09:10	8.3	0.1808052	0.1802457	0.0001865
EARTH	1972-07-03 05:02	31.2	0.1245570	0.1240562	0.0001670
EARTH	1975-11-10 17:39	13.9	0.1735143	0.1731922	0.0001075
EARTH	1990-06-29 05:27	2.2	0.0572050	0.0570485	0.0000522
EARTH	1993-12-01 23:31	< 1 min	0.1656420	0.1656400	0.0000006
VENUS	1994-12-17 07:49	2.8	0.0139620	0.0139172	0.0000149
VENUS	2007-04-08 00:02	< 1 min	0.0095113	0.0095052	0.0000020
EARTH	2008-06-29 09:00	< 1 min	0.0315806	0.0315803	0.0000001
EARTH	2011-11-12 14:36	< 1 min	0.1619745	0.1619692	0.0000018
VENUS	2021-06-02 07:30	< 1 min	0.0057647	0.0057629	0.0000006
EARTH	2025-06-30 00:12	< 1 min	0.0718685	0.0718679	0.0000002
VENUS	2035-08-07 00:34	4.6	0.0481430	0.0481151	0.0000093
EARTH	2042-07-03 14:44	< 1 min	0.1174244	0.1174143	0.0000034
EARTH	2044-12-08 12:09	1.8	0.1829135	0.1829038	0.0000032
EARTH	2058-07-04 03:39	< 1 min	0.1891194	0.1890940	0.0000085
EARTH	2059-07-07 01:50	1.8	0.1396265	0.1396033	0.0000077
EARTH	2061-12-02 22:58	2.4	0.1682433	0.1682325	0.0000036
VENUS	2062-01-02 21:17	1.2	0.0491706	0.0491435	0.0000090
EARTH	2075-07-01 12:58	< 1 min	0.0977165	0.0977137	0.0000009
VENUS	2076-02-28 13:34	< 1 min	0.0327598	0.0327426	0.0000057
EARTH	2078-11-16 04:49	< 1 min	0.1426907	0.1426873	0.0000011
EARTH	2092-07-04 08:05	2.1	0.1232835	0.1232493	0.0000114
EARTH	2094-11-30 15:04	3.1	0.1608789	0.1608632	0.0000052
VENUS	2106-05-01 17:24	6.0	0.0295727	0.0295223	0.0000168
EARTH	2108-06-29 22:38	< 1 min	0.0256110	0.0256062	0.0000016
EARTH	2111-11-12 02:18	< 1 min	0.1773744	0.1773712	0.0000011
VENUS	2120-06-28 02:31	1.3	0.0418460	0.0418351	0.0000036
EARTH	2125-07-01 19:57	< 1 min	0.0883457	0.0883405	0.0000017

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
103.25756890	174.92461494	0.02695677	MINIMUM
276.44482737	314.91528614	0.13863785	MINIMUM
191.40239902	243.76190977	0.29484179	SADDLE
10.86465893	68.28380788	0.34339700	SADDLE
5.35703890	240.78127621	1.67616673	SADDLE
180.76313684	55.84344008	2.23843746	MAXIMUM

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MOID Plots

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