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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1842561578367753 1.9397e-08  
a 3.985708296091494 2.1777e-08 au
q 3.251316999195515 8.1234e-08 au
i 5.628693957255518 1.4409e-06 deg
node 343.1099670433946 5.5251e-06 deg
peri 92.89021538049508 9.0439e-06 deg
M 177.7913379734524 6.6564e-06 deg
tp 2457765.126941953741
(2017-Jan-11.62694195)
5.0548e-05 TDB
period 2906.408753017042
7.96
2.382e-05
6.522e-08
d
yr
n .1238642016978157 1.0151e-09 deg/d
Q 4.720099592987474 2.5789e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2816  
   data-arc span      36147 days (98.97 yr)  
   first obs. used      1921-09-28  
   last obs. used      2020-09-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42944  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:41:15  

Additional Information
 Earth MOID = 2.27293 au 
 Jupiter MOID = .715274 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

[ 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
1953-Dec-09 02:25 00:01 Jupiter 1.94899131218652 1.94899102042892 1.94899160394412 4.90411450403598 4.81468051072449 2434720.600774455 1.06941511778328 20.8905880701452 10.6012946861205 62.1049453519031 8690537.53545542 T 37 CATAB v2.0f-lin.ifort 2021-Apr-12 11:42:09 2021-Apr-12 11:42
1977-Apr-13 18:57 < 00:01 Jupiter 1.87827873242465 1.87827836691875 1.87827909793055 4.61868947679784 4.51999767060067 2443247.289558959 0.927810843301419 20.8942959787876 12.0860681843531 46.9137987514586 6842297.38607508 T 37 CATAB v2.0f-lin.ifort 2021-Apr-12 11:42:09 2021-Apr-12 11:42
2000-Dec-21 12:37 < 00:01 Jupiter 1.84610780972807 1.84610753182803 1.84610808762811 4.5118557344544 4.40899212584203 2451900.025393710 0.43019840449596 14.3906194894221 12.2096032137327 62.0545128754415 7617245.18365864 T 37 CATAB v2.0f-lin.ifort 2021-Apr-12 11:42:09 2021-Apr-12 11:42
2025-Jan-04 20:50 < 00:01 Jupiter 1.86996168693541 1.86996147665054 1.86996189722016 4.61589712879521 4.51670026831184 2460680.368059298 0.346729170397091 13.9086987598431 9.32643888287986 -76.8173424224944 9272903.70868654 T 37 CATAB v2.0f-lin.ifort 2021-Apr-12 11:42:09 2021-Apr-12 11:42
2049-Mar-25 06:46 < 00:01 Jupiter 1.87836826142135 1.87836803162194 1.87836849122076 4.62803454918424 4.52955110752258 2469525.781699321 0.917118948587512 18.5871669577035 10.2257034569409 -81.7340327021846 8339305.9098667 T 37 CATAB v2.0f-lin.ifort 2021-Apr-12 11:42:09 2021-Apr-12 11:42
2073-Jun-10 11:07 00:01 Jupiter 1.86514156893525 1.86514128196788 1.86514185590262 4.49760161013629 4.3954697195911 2478368.962919604 1.25335274814517 23.7260423914636 10.8359532900223 -70.6694026788436 7346185.53446281 T 37 CATAB v2.0f-lin.ifort 2021-Apr-12 11:42:09 2021-Apr-12 11:42
2097-Jun-14 00:18 00:01 Jupiter 1.85100982264741 1.85100954210596 1.85101010318896 4.36575218795401 4.25964690048734 2487138.512214527 1.22232816160497 24.2537721945876 9.92038133472036 -70.1875930522101 7913410.70114681 T 37 CATAB v2.0f-lin.ifort 2021-Apr-12 11:42:09 2021-Apr-12 11:42
2121-Feb-11 20:56 < 00:01 Jupiter 1.88612789131533 1.88612770912273 1.88612807350792 4.48176508094251 4.38041756355737 2495781.372097562 0.856791927520919 19.6899310596247 8.31538162925711 87.5376181765148 11181346.1724119 T 37 CATAB v2.0f-lin.ifort 2021-Apr-12 11:42:09 2021-Apr-12 11:42
2144-Jun-11 19:15 < 00:01 Jupiter 1.96773975943039 1.96773946467348 1.9677400541873 4.86539380417616 4.77610173589315 2504302.301960504 0.638292857599962 18.9890952851447 13.0660711793459 72.5505255869601 7469922.10781979 T 37 CATAB v2.0f-lin.ifort 2021-Apr-12 11:42:09 2021-Apr-12 11:42
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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