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958 Asplinda (A921 SD)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000958
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1842561862995435 2.964e-08  
a 3.985708304678154 2.4163e-08 au
q 3.251316892755738 1.1669e-07 au
i 5.628686879973724 3.9656e-06 deg
node 343.1099510677349 3.5134e-05 deg
peri 92.89023049054769 3.6768e-05 deg
M 177.7913361033643 1.2029e-05 deg
tp 2457765.126952413161
(2017-Jan-11.62695241)
9.1364e-05 TDB
period 2906.408762409227
7.96
2.643e-05
7.236e-08
d
yr
n .1238642012975432 1.1264e-09 deg/d
Q 4.720099716600569 2.8615e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2785  
   data-arc span      36147 days (98.97 yr)  
   first obs. used      1921-09-28  
   last obs. used      2020-09-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42771  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-23 18:15:47  

Additional Information
 Earth MOID = 2.27293 au 
 Jupiter MOID = .715273 au 
 T_jup = 3.018 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.4   n/a MPO473775 IRAS observations used: 10
diameter diameter 45.112 km 0.405 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
rotation period rot_per 16.543 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D.; Stephens, R.D.; Coley, D.R. (2018) Minor Planet Bull. 45, 147-161.]
geometric albedo albedo 0.045   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
B-V BV 0.834   0.082 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=6.89 deg.

958 Asplinda (A921 SD)          Discovered 1921-Sep-28 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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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
1953-Dec-09 02:25 00:01 Jupiter 1.94899129758042 1.94899090034531 1.94899169481554 4.90411488750527 4.81468090014171 2434720.600572825 1.16500268505879 36.2662139053465 18.2070540728193 -82.3717201635381 5606517.42554984 T 35 CATAB v2.0f-lin.ifort 2021-Feb-23 18:15:56 2021-Feb-23 18:15
1977-Apr-13 18:57 < 00:01 Jupiter 1.87827873359918 1.87827828825479 1.87827917894358 4.61868988169039 4.51999808384508 2443247.289463772 0.957500977437666 35.3760231298596 20.2581360575363 -81.641917492023 4844904.18816552 T 35 CATAB v2.0f-lin.ifort 2021-Feb-23 18:15:56 2021-Feb-23 18:15
2000-Dec-21 12:37 < 00:01 Jupiter 1.8461078587092 1.84610744423912 1.84610827317927 4.51185635392553 4.40899276195182 2451900.025412035 0.433144423068001 34.5545018927319 17.628746218433 -75.1237214687425 5125803.3142673 T 35 CATAB v2.0f-lin.ifort 2021-Feb-23 18:15:56 2021-Feb-23 18:15
2025-Jan-04 20:50 < 00:01 Jupiter 1.8699617472004 1.8699613464237 1.86996214797711 4.61589780740846 4.51670096450696 2460680.368138395 0.469374292911073 34.7877754381306 17.0703893315446 -75.6864673948951 5320261.01260138 T 35 CATAB v2.0f-lin.ifort 2021-Feb-23 18:15:56 2021-Feb-23 18:15
2049-Mar-25 06:46 00:01 Jupiter 1.87836831357179 1.87836791820319 1.87836870894038 4.6280351087981 4.52955168151783 2469525.781793721 1.11446957545267 37.9482259910157 17.5293990521825 -80.6091409883213 5330250.84821399 T 35 CATAB v2.0f-lin.ifort 2021-Feb-23 18:15:56 2021-Feb-23 18:15
2073-Jun-10 11:07 00:02 Jupiter 1.86514162856925 1.86514123196913 1.86514202516937 4.49760206925637 4.39547019211179 2478368.962963919 1.55383655391406 42.7458927180341 16.8145316540769 -79.7943502001165 5005296.36503082 T 35 CATAB v2.0f-lin.ifort 2021-Feb-23 18:15:56 2021-Feb-23 18:15
2097-Jun-14 00:17 00:02 Jupiter 1.85100992185266 1.85100952764501 1.85101031606031 4.36575272271346 4.25964745373142 2487138.512144159 1.64652594954778 45.1221844026941 16.2988165496017 -79.9408909656338 4799166.50762269 T 35 CATAB v2.0f-lin.ifort 2021-Feb-23 18:15:56 2021-Feb-23 18:15
2121-Feb-11 20:56 00:01 Jupiter 1.88612801960516 1.88612764538173 1.88612839382859 4.48176582593223 4.38041833219034 2495781.371930154 1.40174719947744 42.4941045521735 16.9588263744402 -85.0450524537136 5440111.22273447 T 35 CATAB v2.0f-lin.ifort 2021-Feb-23 18:15:56 2021-Feb-23 18:15
2144-Jun-11 19:15 00:01 Jupiter 1.96773983714686 1.9677393625734 1.96774031172032 4.8653944443407 4.77610239108764 2504302.301809596 1.15207861971569 38.7812549874033 22.1273651235477 -87.134040387278 4598593.50573197 T 35 CATAB v2.0f-lin.ifort 2021-Feb-23 18:15:56 2021-Feb-23 18:15
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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