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3028 Zhangguoxi (1978 TA2)
Classification: Main-belt Asteroid          SPK-ID: 2003028
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 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03129721748439988 1.1516e-08  
a 3.017771594166016 1.3033e-08 au
q 2.923323740265158 4.1538e-08 au
i 9.512579643654382 3.2623e-07 deg
node 189.4569261628999 1.382e-06 deg
peri 5.386127465108959 3.7335e-05 deg
M 220.28479352484 4.0309e-05 deg
tp 2459943.637457742295
(2022-Dec-30.13745774)
0.00021586 TDB
period 1914.820093937236
5.24
1.2404e-05
3.396e-08
d
yr
n .1880072186101678 1.2179e-09 deg/d
Q 3.112219448066874 1.3441e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3335  
   data-arc span      43452 days (118.97 yr)  
   first obs. used      1902-04-04  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42787  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 20:41:26  

Additional Information
 Earth MOID = 1.92159 au 
 Jupiter MOID = 1.84174 au 
 T_jup = 3.226 
[ 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 10.78   n/a E2020-QM5  
diameter diameter 25.58 km 1.4 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 7
rotation period rot_per 4.826 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Brinsfield, J.W. (2007) Minor Planet Bull. 34, 108-110.]
[Stephens, R.D. (2007) Minor Planet Bull. 34, 102-103.]
geometric albedo albedo 0.1417   0.017 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 7
SMASSII spectral type spec_B K   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

3028 Zhangguoxi (1978 TA2)          Discovered 1978-Oct-09 by Purple Mountain Observatory at Nanking
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
1905-May-08 11:01 00:02 Jupiter 1.93104742060052 1.93104676344757 1.93104807775688 3.94953504570494 3.83686846787899 2416973.959175314 2.13457362884746 135.495967093101 4.54118677045175 76.0042750713801 20151352.4116587 T 48 CATAB v2.0g-lin.ifort 2021-May-03 20:43:18 2021-May-03 20:43
1952-May-18 15:28 00:01 Jupiter 1.87486155102387 1.87486132123517 1.87486178081406 3.94971271884229 3.83362402494835 2434151.144789369 1.20845598740339 90.0286764419302 3.77410809023961 83.0813239625915 22366832.0357485 T 48 CATAB v2.0g-lin.ifort 2021-May-03 20:43:18 2021-May-03 20:43
1999-May-31 01:23 < 00:01 Jupiter 1.85594187015855 1.85594177519113 1.85594196512597 3.94507841250477 3.82764618506206 2451329.557907013 0.299025748775975 24.0509380827095 4.09192535306337 88.6078262957209 18644126.656281 T 48 CATAB v2.0g-lin.ifort 2021-May-03 20:43:18 2021-May-03 20:43
2046-Jun-12 00:05 < 00:01 Jupiter 1.87420774409428 1.87420760988503 1.87420787830364 3.9260085226216 3.80915611678103 2468508.503278867 0.614838828796235 46.831477910513 5.1482085840658 -85.5556428473431 15232996.1936569 T 48 CATAB v2.0g-lin.ifort 2021-May-03 20:43:18 2021-May-03 20:43
2093-Jun-22 22:10 00:02 Jupiter 1.91695255630743 1.9169521495917 1.91695296302501 3.88211162127109 3.76657309478424 2485686.423562718 1.53790139584173 106.41650678674 6.45302133371816 -79.2390129303488 12059734.0415318 T 48 CATAB v2.0g-lin.ifort 2021-May-03 20:43:18 2021-May-03 20:43
2140-Jul-01 07:45 00:02 Jupiter 1.98507349396348 1.98507263638779 1.98507435154278 3.8400912099643 3.72731926622428 2502860.822746842 2.4708921021111 144.517312698748 7.57196266025593 -72.6649479004505 10004176.3448081 T 48 CATAB v2.0g-lin.ifort 2021-May-03 20:43:18 2021-May-03 20:43
2178-Mar-24 22:49 00:03 Jupiter 1.93045645782022 1.93045557294272 1.93045734270452 3.831361638746 3.71507685184249 2516641.450982299 3.16004289059706 189.749998400397 4.2950614822069 76.1152800412995 20815565.3641987 T 48 CATAB v2.0g-lin.ifort 2021-May-03 20:43:18 2021-May-03 20:43

Alternate Designations
 1978 TA2 = 1931 XP = 1941 VD = 1949 FB1 = 1950 LC1 = 1965 JJ = 1970 FL = 1970 GQ = 1971 KC1 = 1983 TO = A902 GC = A904 SG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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