[ hide orbit diagram ]
For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .05965371644390042 | 4.1458e-08 | |
| a | 3.00409929577559 | 1.6638e-08 | au |
| q | 2.824893608216072 | 1.2089e-07 | au |
| i | 8.745135929274293 | 3.9496e-06 | deg |
| node | 294.2847209924721 | 3.3373e-05 | deg |
| peri | 4.635311619221194 | 5.5552e-05 | deg |
| M | 103.8110060218128 | 4.5261e-05 | deg |
| tp | 2458452.083199034815
(2018-Nov-29.58319903) | 0.00023916 | TDB |
| period | 1901.821935007376
5.21 | 1.5799e-05
4.326e-08 | d
yr |
| n | .1892921694578119 | 1.5725e-09 | deg/d |
| Q | 3.183304983335108 | 1.763e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
12.2 |
|
n/a |
MPO350972 |
|
| diameter |
diameter |
12.179 |
km |
0.173 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
| rotation period |
rot_per |
4.233 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.] |
| geometric albedo |
albedo |
0.172 |
|
0.015 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
|
| 21557 Daniellitt | Discovered 1998 Aug. 24 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. |
| Daniel Abraham Litt (b. 1988) was awarded second place in the 2006 Intel International Science and Engineering Fair for his mathematics project. He attends the Orange High School, Pepper Pike, Ohio, U.S.A. |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: 20060711/MPCPages.arc | Last Updated: 2006-07-17 |
|
[ hide close-approach data ]
Close-Approach Data ...sorted by Date/Time (TDB)
|
| Date/Time (TDB) |
Time Uncertainty
(days_HH:MM) |
Body |
Nominal Distance (au) |
Minimum Distance (au) |
Maximum Distance (au) |
V-relative (km/s) |
V-infinity (km/s) |
JD (TDB) |
Time Uncertainty (minutes) |
Semi-major axis (km) |
Semi-minor axis (km) |
range-LOV angle (deg) |
N-sigma |
BP |
Orbit Ref. |
Reference |
Modified |
| 1989-Oct-24 16:36 |
< 00:01 |
Jupiter |
1.99332490937438 |
1.99332453406746 |
1.99332528468119 |
3.92073284912997 |
3.81081187093432 |
2447824.191869238 |
0.608411450511577 |
65.8901398144422 |
16.250725797446 |
-86.8199664738225 |
4289426.29931278 |
T |
37 |
CATAB v2.0f-lin.ifort 2020-Dec-18 03:17:12 |
2020-Dec-18 03:17 |
| 2119-Oct-22 00:17 |
00:03 |
Jupiter |
1.99453193479612 |
1.9945314485226 |
1.99453242107214 |
3.79464964471643 |
3.6810353535886 |
2495302.511847862 |
2.63652693476849 |
150.431408895862 |
13.6744028425631 |
-82.1961143764766 |
4579488.56732627 |
T |
37 |
CATAB v2.0f-lin.ifort 2020-Dec-18 03:17:12 |
2020-Dec-18 03:17 |
|
Alternate Designations
| 1998 QE73 = 1962 UD = 1993 SG16 |
|
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