Asteroids

2008NA help

Last update: 2025-06-12 07:47 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Aten

Perihelion (q)

0.672

Aphelion (Q)

1.257

Eccentricity (e)

0.304

Inclination (i)

9.9

deg

Orbit period (P)

345.9

Earth MOID

0.02767

U parameter

8.8

Next Earth close approach

Date

2025-06-28

Nominal distance (from Earth center)

0.02866

4287642

Maximum Brightness

18.4

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

0.964414

1-sigma variation

0.001557

Unit

Eccentricity (e)

Value

0.303687

1-sigma variation

0.000228

Unit

Inclination (i)

Value

9.9447

1-sigma variation

0.0740

Unit

Long. of Ascending Node (Ω)

Value

104.7231

1-sigma variation

0.0958

Unit

Arg. of Perihelion (ω)

Value

52.5574

1-sigma variation

0.6378

Unit

Mean Anomaly (M)

Value

28.40962

1-sigma variation

2.32740

Unit

Perihelion distance

Value

0.671534

1-sigma variation

Unit

Aphelion distance

Value

1.257294

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.244560

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.057273

1-sigma variation

Unit

MOID

Value

0.027666

1-sigma variation

Unit

Orbit Period

Value

345.9343

1-sigma variation

Unit

U parameter

Value

8.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.42470E-6	-3.54384E-7	1.15291E-4	1.49230E-4	-9.93081E-4	-3.62409E-3
e	-3.54384E-7	5.19237E-8	-1.68446E-5	-2.18094E-5	1.45133E-4	5.29721E-4
i	1.15291E-4	-1.68446E-5	5.48216E-3	7.09572E-3	-4.72200E-2	-1.72318E-1
Ω	1.49230E-4	-2.18094E-5	7.09572E-3	9.18450E-3	-6.11201E-2	-2.23047E-1
ω	-9.93081E-4	1.45133E-4	-4.72200E-2	-6.11201E-2	4.06736E-1	1.48431E0
M	-3.62409E-3	5.29721E-4	-1.72318E-1	-2.23047E-1	1.48431E0	5.41679E0

Date of computation: 2025-06-12 07:47 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

23.715

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

[-]

Download this part as:

Sources

No.	Name	Additional
No.[1]	NameESA Aegis	AdditionalESA orbit determination and impact monitoring system
No.[2]	NameEstimation	AdditionalEstimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

6188

Unit

Source

[1]

Normalized RMS of residuals

Value

0.639193

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

2008-07-11.10307

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

74 (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	1953-06-29 10:25	> 1 d	0.0666617	0.0294911	0.0933640
EARTH	1956-11-26 21:52	> 1 w	0.1539299	0.1396683	0.0239329
VENUS	1961-10-04 22:41	> 1 d	0.0309151	0.0114529	0.0124310
EARTH	1972-06-29 16:19	> 1 d	0.0869501	0.0315943	0.1078619
EARTH	1975-11-13 08:34	> 1 d	0.1524132	0.1378756	0.0484705
EARTH	1990-06-29 13:05	1161.6	0.0665660	0.0298727	0.0238783
EARTH	1993-12-01 23:50	217.8	0.1658058	0.1655168	0.0001104
VENUS	1994-12-16 21:12	> 1 d	0.0171433	0.0068754	0.0093624
VENUS	2007-04-07 23:36	88.7	0.0095088	0.0091793	0.0001103
EARTH	2008-06-29 09:00	< 1 min	0.0316026	0.0314366	0.0000553
EARTH	2011-11-12 18:29	534.3	0.1608423	0.1529690	0.0029108
VENUS	2021-06-03 08:17	> 1 d	0.0097169	0.0058195	0.0148157
EARTH	2025-06-28 19:24	250.0	0.0286611	0.0270141	0.0160384
EARTH	2028-11-18 20:28	> 1 w	0.1373047	0.1372703	0.0004141
EARTH	2043-06-30 01:09	> 1 w	0.0602175	0.0274227	0.3993894
EARTH	2046-11-26 12:10	> 1 mo	0.1480875	0.1383054	0.1362318
EARTH	2062-07-01 18:17	> 1 w	0.1046466	0.0330465	0.1223693
EARTH	2065-11-12 08:10	> 1 w	0.1632575	0.1377932	0.1399053
EARTH	2080-06-28 15:11	> 1 d	0.0310663	0.0270064	0.1392755
EARTH	2083-11-25 05:26	> 1 mo	0.1430442	0.1379452	0.1008237
VENUS	2089-09-13 03:32	> 1 mo	0.0152215	0.0037429	0.5695989
EARTH	2098-06-30 17:23	> 1 mo	0.0729591	0.0246051	5.5591294
EARTH	2101-11-24 09:29	> 1 mo	0.1398591	0.1366789	1.6411749
VENUS	2102-01-01 14:20	> 1 mo	0.0303063	0.0043668	8.5508855
EARTH	2115-07-05 13:11	> 1 mo	0.1733825	0.0236177	30.6305694
EARTH	2116-07-09 07:11	> 1 mo	0.1499885	0.0467435	26.7799806
EARTH	2118-12-05 06:55	> 1 mo	0.1660131	0.1446174	19.7558183

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
102.80693648	174.56334437	0.02766640	MINIMUM
276.55000123	314.86281713	0.13739455	MINIMUM
191.08926421	243.46902869	0.29762074	SADDLE
10.71747018	68.06806308	0.34326174	SADDLE
5.30278875	240.67944758	1.67597585	SADDLE
180.77016622	55.80415259	2.24257932	MAXIMUM

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MOID Plots

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